"A condominium offers a unit with a selling price of $5$ million pesos. A buyer may choose to amortize the unit monthly over a span of $25$ years on top of paying annually an amount of $500,000.$ How much is the buyer's balance after $25$ years if the monthly payment is $16,500?"$

Hint: Around $300$k$.$ Tolerance shall be around $1$k$.$

base on the hint what is the answer?