Can this be done with and without a Financial Calculator?

A firm evaluates all of its projects by using the NPV decision rule. Year 0 1 2 3 Cash Flow -$30,000 20.000 16,000 8,000 Required: (a)At a required return of 22 percent, what is the NPV for this project? (Click to select) v (b)At a required return of 34 percent, what is the NPV for this project? (Click to select) v