Here, A Refers back to the long term value of the expenditure; P refers to the principal total to get invested; r refers back to the price of curiosity; n refers to the volume of instances the interest will get compounded every year; t refers to the tenure (in a https://www.google.com/maps/d/u/0/viewer?mid=1o3vHoDG_5EIkMXyD_8nuLLiHqxZbkJg