'Excel string to number conversion, while getting rid of the M for a whole column

I am working with data that was entered as a string, $105M, instead of a numerica value, 105,000,000.00

How do I convert this? I have been Googling and have looked up several times. It's referencing athlete salaries, and thus, they're all in the millions. To simplify, they just put M instead of the whole, much larger, number. I understand why, but now I can't do the sum of the columns, and I can't do much with it in my Tableau visuals. Any advice or ideas? I want to convert both the Salaries and Endorsement columns. I will attache a picture. Thanks.enter image description here



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