please calculate cash payback period thank you

Carper Company is considering a capital investment of $361,200 in additional productive facilities. The new machinery is expected to have useful life of 6 years with no salvage value. Depreciation is by the straight-line method. During the life of the investment, annual net income and net annual cash flows are expected to be $18,060 and $84,000, respectively. Carper has an 7% cost of capital rate, which is the required rate of return on the investment (a1) Your Answer Correct Answer Your answer is correct Compute the cash payback period. (Round answer to 2 decimal places, eg. 2.25) Cash payback period 4.30 years (a2) Your Answer Correct Answer Your answer is correct Compute the annual rate of return on the proposed capital expenditure (Round answer to 2 decimal places, eg, 2.25%) Annual rate of return 10.00 % Using the discounted cash flow technique, compute the net present value. (Round present value factor calculations to 5 decimal places, es, 1.25124 and the final answer to 2 decimal places eg. 589.71.) Net present value $ 3918936 Tev hanted (c1) Carper was presented with a second capital investment that provided similar production facilities as the first one. This investment cost $395,000, had a useful life of 7 years with a salvage value of $15,000. Depreciation is by the straight-line method. During the life of the investment, annual net income and net annual cash flows are expected to be $23.370 and $79,000 respectively, Carper's 7% cost of capital is also the required rate of return on the investment, Compute the cash payback period. (Round answer to O decimal places, eg. 25.) Cash payback period years