What is the equal to ( 1+3+5+7+.........+3983 ) / 1992 ?

Question

Using the numbers 1, 2, 2, 5, 6 & 7 in any order, can you find a mathematical expression with a result equal to 160?

The conditions are as follows;

You may use any of the four basic operation (which are addition, subtraction, multiplication & division).
You can also use parenthesis if needed.
You cannot repeat the numbers.
You cannot join the numbers together (eg: 1 & 2 as 12)

Answer 1

Summation of odd number series is just n^2

To find n
(2n-1)=3983
n= 1992

Therefore

(1+3+5+7......+3983) = 1992^2

So

(1992^2)/1992 = 1992