If you're finding my weekly brain teaser too low stakes, try this one, win a million bucks!
There are 11 ways of expressing the number 100 as a number and fraction using the nine digits once each.
91+ (5823/647) = 100
The challenge is to find some of the other 10 ways.
Hint: In 9 of them, that first number is above 80. In one of them, it's less than 10.