Question

54 times 123 = 6 times 123 times What is the missing number

Answer 1

If you mean the sum:
54 x 123 = 6642
6 x 9 = 54
6 x 9 x 123 = 6642

Answer 2

The missing number would be 9 because 54 times 123 equals 6642 so to make the equations equal you have to do 6 times 123 times 9 so both equations balance. i found the answer by multiplying 123 by 6 and dividing the number by 6624