It is so very quick and easy to get the answer if only you can be bothered to use your calculator. You should try it.
856 times 79 = 67624
3,424
0.0093
Greatest: 856 Smallest: 1
856 + 100 = 956
856 + 258 = 1114
42 times
689 times 42 is 28,938.
6 times 7 = 42
42 because 21 times 2 is 42 and 14 times 3 is 42
856 ÷ 2 = 428
It is: 856 = DCCCLVI