Answer:
$55,108.80
Explanation:
15 year mortgage
925.14/month times 180 months =
$166,525.20
30 year mortgage
615.65/month times 360 months =
$221,634
$221,634 - $166,525.20 =
$55,108.80
So the difference between the 15 year mortgage and the 30 year mortgage is $55,108.80