7{-7+8{ XXXXXXXXXX]} divided by XXXXXXXXXXsquared

Solve: 7{-7+8{5-3(4+6)+1]} divided by 5(6-7) squared
Solution: The expression would be solved as follows:
7{-7+8[5-3(10)+1]} divided by 5(-1)
2
7{-7+8[5-30+1} divided by 5
7{-7+8[-24]} divided by 5
7{-7 – 192} divided by 5
7{-199} divided by 5
 -1393 divided by 5
 -...