You are thinking of pursuing an actuarial career, so you have agreed to serve as an intern at Love Actuaries LLP$.$

The managing partner, Karen Thompson, has asked you to do some quick calculations for her. She wants you to use the current yield curve, flat at $6\%,$ in your calculations.

Client Annie Inc. has a pension plan that pays pension benefits annually at a rate of $$10$ million per year, starting one year from today. The pension obligation will end in $40$ years. Karen wants to know the duration of these required pension payments.

This is what I have determined so far, however I am unsure how to determine the required payments. Assistance would be appreciated