NPV calculations based on cashflow

Hi guys,

Could you help me out as I am so terrible at math.

I am thinking of opening a new small business and I was trying to calculate the NPV by myself but got stock.

We already got predicted cashflows as follows:
Investment - £1,000
Year 1 - £1,500
Year 2 - £1,750
Year 3 - £2,200
Year 4 - £2,650
Year 5 - £2,900

Anyone can help with the NPV calculation?

Many thanks