While multiple years salary per hour is an insane ask, it would take 73 years of work (assuming 40 hours a week and no vacations) to match the amount Musk wants.
This is why you shouldn't always obfuscate numbers.
$56,000,000,000
> $370,000
The difference between a billion dollars and a million is roughly a billion dollars.
And, hey, $7,000,000,000 to save $56,000,000,000 is a good deal.