on excel

Youre 55 years old today, and you wish to start saving for your pension. Here are the parameters:

You intend to make a deposit today and at the beginning of each of the next 9 years (that is, on your 55^th, 56^th, ..., 64^thbirthdays);

Starting from your 65^th birthday until your 84^th, you would like to withdraw $50,000 per year (no plans for after that);

The interest rate is 12%.

How much should you deposit in each of the initial years in order to fully fund the withdrawals?