Need help finding the cash flow diagram and equivalence formula for this question

(10 pts) A company needs to buy a building in 4 years, and must fund the down payment from its profits. The purchase price in four years will be $260,000, of which the company can finance (borrow from a bank) $200,000 at 8%. If the company must make the purchase in 4 years and can receive 0.25% monthly interest on its savings (compounded monthly). How much must the company save each month to have the required down payment in 4 years