21 * 42 = 882
42*18 = 756
50 multiplied by 44 is 2,200
504
74 multiplied by 42 is 3,108
54 multiplied by 42 is 2,268
42 multiplied by 16 is 672.
2 when multiplied by 21 = 42
42
42 multiplied by 3 is 126.
42 multiplied by 15 is 630.
42 out of 50 = 100*42/50 = 42*100/50 = 42*2 = 84%