Whoops you're right. Major math error on my part. This is why I changed majors very early and did not stick with engineering.While I agree with your overall point, not sure the math is correct here.
1% of $6B is $60M, annually. Over three days that closer to half a million dollars. After tax, $300-400K depending on his rate.
Again agree he could give the full year's amount to IU (yuck) and 'suffer' by dipping into the principal.
Looking back at what I did, I calculated his daily interest at approx. 164,000 but then read it off the calculator as $16.4 million. Yikes. I deserve the public shaming on that one!