(((((((((((((((558000*.03782+558000).03782+558000).03782+558000).03782+558000).03782+558000).03782+558000).03782+558000).03782+558000).03782+558000).03782+558000).03782+558000).03782+558000).03782+558000).03782+558000).03782+558000)
Why in the world would you write it like that!!!???. It appears that you trying to find the Future Value of $558,000 @ 3.782% for 15 terms(years)?. If I'm reading it right, don't you know that there is a shortcut to this?? The formula is very common and simple:
FV = PV x [1 + R]^N
FV = 558,000 x [1 + 0.03782]^15
FV = 558,000 x 1.745141....
FV = $973,788.71
P.S. This formula compounds your $558,000 @ 3.782% for 15 years.