Mr$.$ T$.$A wants to buy an apartment by borrowing from the Housing Development Bank with an interest rate of $6\mathrm{.}72\%$ within $20$ years. The loan will be paid on a fixed monthly basis with the first payment exactly $1$ month after the loan. Suppose Mr$.$ T$.$A has the ability to pay $105$ units per month and thanks to savings he can immediately pay $4,300$ units. at the time of buying the house. What is the value of the apartment that Mr$.$ T$.$A can own?