sqrt(225 = 15
15
372
3+2=5 donuts
56286372367*1000 = 56286372367000
39-15 = 24
12-5 = 7
3/4+1/10 = 0.85 or 17/20
15-3 = 12
12/6 = 2
x=2
9/4 = 2.25