unable to satisfied the condition that final expression should have 2 opening and 2 closing parentheses.

(2 * (3 +( 4 * (5 + 6 * 7))))...but it says I should have 2 opening and closing parenthesis. May anyone tell me how to solve it?

got the answer but dont know what they want

OK. I give up. I've been dealing with this for hours: Failing to satisfy the condition about 2 opening and 2 closing parenthesis. What am I missing? If I remove the last 2 it does not give the correct answer.

Remove the outer parenthesis, they aren't needed.

You can only use 2 sets of parenthesis. Remove the outer ones, they do nothing as of now.

try with this

You have the correct output but you can do it with removing 2 sets of parentheses. It should look something like this: