A newly wedded couple is planning to buy a two bedroom apartment in Windhoek for N$$280000.$ He is expected to pay a $10\%$ deposit and they can secure a bond from a local bank repayable over $24$ years at $9\%$ p$.$a$.$ interest.

$($a$)$ What is the total amount of money expected to be paid to the bank over the years? N$

$($b$)($i$)$ What will be the couples monthly installment? N$

$($ii$)$ Calculate the monthly interest amount they will have to pay? N$

$($iii$)$ What is the monthly principal amount to be paid?

$($iv$)$ what is the total interest amount to be paid at the end of the bond period?