Hello! I need help with a finance problem. Thank you!

4.If an investor in a pension fund expects to contribute EUR 150 for 30 years, what will be the monthly pension paid to the investor by the pension fund for the next 20 years, assuming that, during the contribution period, the average annual return of the fund is 2%, respectively 3% during the benefit payment period? Monthly contributions and monthly pensions are paid at the end of the month. (TVM)