Seriously?No, that is exactly how it works. Multiply the input of the function by a value (mortgage amount) and the resulting output (total mortgage cost) is multiplied by that same value
The total cost of a 30 year mortgage for various loan amounts at 3.92%
$100->$170
$1,000->$1,702
$10,000->$17,021
$100,000->$170,213
$200,000->$340,427
$300,000->$510,640
Works the exact same way for the monthly payment.
r = Monthly Interest Rate (in Decimal Form) =
(Yearly Interest Rate/100) / 12
P = Principal Amount on the Loan
N = Total # of Months for the loan ( Years on the loan x 12)
My sarcasm was missed? Unpossible.
I'm refinancing right now, crazy that I can, again, and come out "ahead".