5/50 = 1/10
12.75
353 is a prime number because it has only two factors which are itself and one.
Multiples of 353 include 353, 706, 1059, 1412, 1765, and so on.
228 is a multiple of 12 so estimation is not necessary but if you must, then 240/12 = 20
51 is not a prime number because it can be divided by 3 and 17 in addition to 1 and itself.
0.0142
44.125
4.1047
320.9091
353 ÷ (5 x 232) = 353 ÷ 1160 = 0.3043
39
0.0113
117.6667
6.537
51 divided 38 = 1.3421052631578947
68
12.75