I'm trying to figure out how to calculate the internal rate of return where you invest a certain amount of money in years 1-10, then no more investments are made thereafter yet the dollar amount you receive is static. For example, 90,000 is invested in Year 1, then $7,300 per year every year thereafter. The payout is always the same - $1,000,000. So what is your ROR after year 10, 20, 30 and 40?