60/12 = 5
12 x 71 = 852
-8 x 7/12 = -56/12 or -4 and 2/3
If you add the digits in a number together and that number can be devided by three than the original number can be devided my three also. Ex. 273, 2+7+3=12. 12 can be devised by three so 273 can too.
17 with remainder 317 R 3
9.5
2
4
103.5
1.
about .117671
2