20(30 * 49) = 49( 28479 - 2749 * 4763)

baby Steps!

Readyy??

 

First.. Do 

20(30*49) which would lead you too..

24900. Got it so far?

Okay, next step!!

24900= 49( 28479 - 2749 * 4763)

Okay, we want to times 49 to 28479, 2749, and 4763..

Ready??

24900=1395471 - 134701 * 233387

 

Next.. We Subtract 1395471 to 134701, then we times it by 233378..

24900=1260770 * 233387

24900= 294247327990

Then., we divide! 

Answer is..

11817161.7667

 

:)