How would you solve this using excel formulas, step by step?

An insurance company is offering a new policy to its customers. Typically, the policy is bought by a parent or grandparent for a child at the childs birth. The details of the policy are as follows: The purchaser (say, the parent) makes the following six payments to the insurance company: First birthday: $ 790 Second birthday: $ 790 Third birthday: $ 890 Fourth birthday: $ 890 Fifth birthday: $ 990 Sixth birthday: $ 990 After the childs sixth birthday, no more payments are made. When the child reaches age 65, he or she receives $370,000. If the relevant interest rate is 11 percent for the first six years and 7 percent for all subsequent years, what is the value of the policy at the child's 65th birthday? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)