Former President Donald Trump and New York Attorney General Letitia James, in separate media appearances, addressed the ruling Friday evening, trading barbs while reacting to the judgment.

Speaking from his Mar-a-Lago estate in Florida, Trump said he had to pay a fine for "having built a perfect company." Accusing both James and Judge Arthur Engoron of being politically motivated, Trump denied committing any fraud and said he plans to appeal.

Meanwhile, in New York, James lauded the ruling as a victory for all Americans and the principles of equal justice under the law -- saying "former presidents are no exception."

"The scale and scope of Donald Trump's fraud is staggering -- and so, too, is his ego and his belief that the rules don't apply to him," she said.

James also heralded Judge Engoron's penalties as effective remedies to "ensure this fraud cannot continue."

Based on Friday's decision, former President Trump and his co-defendants will likely owe $463.9 million based on their initial fine and the prejudgment interest imposed by the court, according to a representative for the New York attorney general.

Trump himself will likely owe $453.5 million, between his $354.86 million fine and $98.6 million in interest.

The amount of interest owed by the defendants is set to increase every day they do not pay the fines.

New York Attorney General Letitia James, whose office brought the civil fraud case against Donald Trump, described the ruling as a "tremendous victory for this state, this nation, and for everyone who believes that we all must play by the same rules -- even former presidents."

“When powerful people cheat to get better loans, it comes at the expense of honest and hardworking people," James said in a statement. "Everyday Americans cannot lie to a bank to get a mortgage to buy a home, and if they did, our government would throw the book at them. There simply cannot be different rules for different people."

The former president is "finally facing accountability for his lying, cheating, and staggering fraud," she said.

In addition to the fines imposed on Donald Trump and his co-defendants, the judge's decision leaves the Trump Organization in a constrained position to continue operating their New York-based businesses.

While Judge Engoron backtracked on his September summary judgment ruling -- vacating the part of his order that canceled their business certificates -- Donald Trump and his sons are temporarily unable to lead their namesake company. Trump faces a three-year ban on serving as the leader of a New York company, and his sons face two-year bans.

An independent monitor will continue to oversee the company's finances for at least three years, and the company needs to install a director of compliance.

Regarding the combined $364 million owed by the defendants, experts who ABC News spoke with believe it is unlikely any of them foot the bill immediately; instead, they can cover the fine with a bond while they appeal.

Donald Trump's lawyers plan to call two experts, Lawrence Moens and John Shubin, to testify on Trump's valuation of his Mar-a-Lago property in Palm Beach, Florida.

Moens is a well-known real estate broker in Palm Beach, and Shubin is an expert on deeds and land restrictions.

The value of the property has been bitterly contested by Trump's lawyers since the start of the trial, after Judge Arthur Engoron, in his pretrial partial summary judgment determined that Trump overvalued the property by at least 2,300%. When Trump testified in the trial in November, he repeatedly lashed out at Engoron for what he called a "crazy" assessment of the property.

"He said in his statement that Mar-a-Lago is worth $18 million and it's worth 50 times to 100 times more than that, and everybody knows it. And everybody is watching this case. He called me a fraud and he didn't know anything about me," Trump said on the stand.

According to evidence shown at trial, Trump agreed in a 2002 deed to "forever extinguish their right to develop or use the Property for any purpose other than club use." While Trump Organization executives were aware of the limited use of the property, they allegedly valued the property as a residence in Trump's financial statements while treating it as a social club for tax purposes, according to New York Attorney General Letitia James.

In Trump's statements of financial condition, he valued the property between $426 million and $612 million, despite a local tax assessor appraising the market value of the property between $18 and $27 million. Engoron, in his summary judgment ruling, wrote that James had proven that Trump was liable for a false valuation of the property.

Trump has repeatedly argued that Engoron misunderstood the purpose of a tax assessment, going as far as to call Engoron's finding "fraud."

"Are you paying taxes on an $18 million valuation of Mar-a-Lago or $1.5 billion?" state attorney Kevin Wallace asked Trump during his direct examination.

"You know that assessments are totally different from the valuation of property," Trump responded.