Hi there! The answer is 30.
We need to use PEMDAS to simplify.
P = parenthesis
E = Exponents
M = Multiply
D = Dividing
A = Adding
S = Subtracting

First find the exponents inside the middlest parenthesis.

Now add inside the parenthesis.

Multiply inside the parenthesis that are left.

Divide inside the parenthesis

Add inside the parenthesis.

Multiply.

~ Hope this helps you!