42/55 * 30/14 = 18/11 or 1.6363... recurring.
You seem to be unaware of the fact that you could have obtained the answer much more easily and quickly by using the calculator that comes as part of your computer.
30/42 = 5/7 = 10/14
42 because 21 times 2 is 42 and 14 times 3 is 42
14 _____ 42
7/10, 14/20, 21/30
42
answer = 42 14 goes into it 3 times
42.
30 over 42 can be reduced to 5/7
3 times with 8 left over. (ie 3 8 /14 or more correctlly 3 4 /7 )50/14= 3.5714286 it can only fit into 50 3 times without going over 50. 14 x 3 = 42, and since there is a remainder of 8 ( 50 - 8 = 42), then the .5714286 would roughly equate to an 8
42/14 = 3
15/14 x 2/3 = 30/42 or 5/7
The Answer is 42 (7x6=42) seven times six is 42.