where p is the principal
r is the interest rate = 12.5 % = .125
t = time = 2 years
i = 5000* .125*2 =1250
the total cost is the loan plus the interest
a = 5000+1250
divide by the 24 months
a cube has six sides so you factor that in. what you do is square the length of one of the sides and then multiply by how many sides there are.