Combine and .

Divide by .

Add and .

Multiply by .

Rewrite the expression using the negative exponent rule .

Raise to the power of .

Divide by .

Multiply by .

Subtract from .

Multiply by .

Cancel the common factor of and .

Factor out of .

Cancel the common factors.

Factor out of .

Cancel the common factor.

Rewrite the expression.

Multiply the numerator by the reciprocal of the denominator.

Divide by .

Combine and .

Multiply by .

Divide by .

Evaluate (160000(0.05/12))/(1-(1+0.05/12)^(-12*20))