I am buying a washer for 4500 if i never miss a payment intrest free i acciendlty missed the payment intrest 15% convirted into dec for 3yr how much will i actually spend and explain please t=3y. so I need to know how much inrrest from .15 x3 y would pay more for it, and yes its mid calculater work if any one can help please do oh, and anyone good with this type off math? i suck and go to school on line so any one could help I apperiacte it,