Answer:
$ 5,142,857.14
Explanation:
Calculation for how much must your grandparents deposit today
Using this formula
Amount that grandparents must deposit today = Regular amount / Rate of interest
Let plug in the formula Amount that grandparents must deposit today= 180,000 / 0.035
=$ 5,142,857.14
Therefore the Amount that grandparents must deposit today will be $5,142,857.14