"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 $500,000$ with interest rate of $6$ percent annually. 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$.$