Help me check please!

It has 3 parts in this one Question.

#2) A project has the following cash flows: Year 0: $130,000 Year 1: $60,000 Year 2: $0 Year 3: $100,000 Year 4: $0 Year 5: $60,000 The discount rate is 18%. a) Calculate the discounted payback period. b)Calculate the internal rate of return (IRR) c) Calculate the payback period