I cant figure out how to Calculate NPV and IRR in Excel

• Initial investment outlay of $40 million, consisting of $35 million for equipment and $5 million for net working capital (NWC) (plastic substrate and ink inventory); NWC recoverable in terminal year
• Project and equipment life: 5 years
• Sales: $27 million per year for five years
• Assume gross margin of 50% (exclusive of depreciation)
• Depreciation: Straight-line for tax purposes
• Selling, general, and administrative expenses: 10% of sales
• Tax rate: 35%

Assume a WACC of 10%.