How about: 2 times 21 = 42
420
2 when multiplied by 21 = 42
2*21 = 42
42
42
42
There are 504 inches in 42 feet. This can be calculated by multiplying 42 (feet) by 12 (inches in a foot).
Because you can't multiply 9 by an integer to get 42.
multiply 4 and 42, then you have your aswer.
You would get 42
42