Hey, I'm a student in finance and I don't understand well this question, could you please explain to me how to respond and the formula to use? Thanks in advance

"A couple has just had a child and they want to make sure that there will be enough money when the child starts college. Today, if you add up school fees, accommodation, books and other expenses, the total comes to 12835 per year. However, they also noticed that these costs are still growing at a rate of 3.19% per year. They wonder: what precise amount will they need to have in their bank account when the child turns 18 in order to finance 4 full years of university?

i. The couple's savings are and always will be remunerated at an interest rate of 6.87% per year.

ii. The couple has just had the child, so he is "0 years old" today.

iii. It is assumed that the payment for the first year of university will coincide with his 18th birthday. The next payment will be made the following year and so on.

"