Math Improve

Modify and Improve math expressions.

IO (Input / Output)

Input	Output
(2+3	(2+3)
8-(2*3	8-(2*3)
5+4*(2+3	5+4*(2+3)
(5+4*(2+3	(5+4*(2+3))
5/(2-6*3	5/(2-6*3)
4-(5*7*3	4-(5*7*3)
3.14*-1+	3.14*-1
6*6*(1*5/4	6*6*(1*5/4)
3.14*(5^2	3.14*(5^2)
pow(4,2	pow(4,2)