Question 1015224
8829.60= x(1+((0.088/12)*18))
8829.60= x(1+0.132)
8829.60= x1.132
x= 8829.60/1.132= 7,800 this is the original amount of the loan, and the interest: 
8,829.60-7,800= 1,029.60 is the total interest.