They’re a couple of on-the-airheads!

NBC’s Brian Williams and New York Times editorial board member Mara Gay reported that Mike Bloomberg spent $327 trillion on his doomed presidential bid.

The former New York City mayor, worth an estimated $65 billion, actually blew through about $550 million in three months before dropping out Wednesday, winning only American Samoa.

Williams and Gay cited a since-deleted tweet from freelance journalist Mekita Rivas, who wrote Bloomberg spent $1 million per U.S. resident.

Rivas later edited her Twitter bio to read, “bad at math.”

But Williams, the serial exaggerator suspended by the network for six months in 2015, presented the claim as fact.

“Somebody tweeted recently that actually with the money he spent he could have given every American a million dollars,” Gay said Thursday evening on Williams’s show.

“When I read it tonight on social media, it kind of all became clear,” Williams concurred.

In her tweet, Rivas wrote: “Bloomberg spent $500 million on ads. The U.S. population is 327 million. He could have given each American $1 million and still have money left over.”

The tweet was displayed by MSNBC as Williams and Gay offered commentary — seemingly unaware of the avalanche of corrections on Twitter.

“It’s an incredible way of putting it,” Williams said.

Gay, dubbing Bloomberg a “billionaire with good intentions,” added: “It’s an incredible way of putting it. It’s true. It’s disturbing. It does suggest what we’re talking about here: there is too much money in politics.”

Later in the broadcast, Williams said he “misinterpreted” the tweet.

His show released a statement, saying: “Tonight on the air we quoted a tweet that relied on bad math. We corrected the error after the next commercial break and have removed it from later editions of tonight’s program. We apologize for the error.”

The New York Times editorial board member fessed up to her error, tweeting Friday morning: “Buying a calculator, brb.”