How can we solve for this exercise with formulas? and with a financial calculator?

You need to accumulate $10,000. To do so, you plan to make deposits of $1,250 per year, with the first payment being made a year from today, in a bank account which pays 12 percent annual interest. Your last deposit will be less than $1,250 if less is needed to round out to $10,000. How large will the last deposit be? (Note: You first need to calculate how many years it will take you to reach your $10,000 goal)