Can anyone help me to write this equation in C++?

Sorry, we don't do homeworks. Try it yourself; if you get stuck on something specific, then ask away, just don't come here with nothing done and asking for everything.

webJose, you're right,
But I have tried to solve this problem for one week. Unfortunately, I couldn't...
I was not able to create a large int class which can multiple and addition.
At least help me with creating a large int class...

type the equation in http://www.wolframalpha.com