40.1625
To determine if 3213 is divisible by 9, we need to sum its digits: 3+2+1+3=9. Since the sum of the digits is divisible by 9, then 3213 is divisible by 9 according to the divisibility rule for 9.
6400 divided but 80 = 80
There are 5280 feet in one mile. Therefore, 3213 feet is equal to 3213/5280 = 0.6085227 recurring (that is, 0.60852272727...) miles.
80
0.3125
80 divided by 13 is 6.15384615384
64,000 divided by 80 = 800
-76
80
0.025
0.4211
7