<prompt> Human: At the end of each month, I have any where between 800 and 1200 that I would like to put in one of three places. I currently am paying off 50,000 in student loan debt at 5.625 interest that has a term of 22 years left. I also have a mortgage for 27 more years at 240,000 with an interest rate at 4.25. The third option is investing it in a mutual fund through vanguard. I already have an emergency fund and I have no other debt. Which of the three should I do? Should I do a combination of two or all three? Im open to suggestion. Thanks!  <response>: I just ran a quick calc on your student loan and it looks like your current monthly payment is about 330. If you put an extra 800 a month on that student loan, it would result in reducing the payment from 22 years all the way down to just over 4 years, and would save you 31,000 in interest over the life of the loan. If the extra monthly payment is 1000, then it would be paid off in 3.5 years and save you over 32,000 in interest. If the extra payment was 1200 a month it would be paid off in 3 years and save you just under 33,000 in interest. Throw it all towards your student loans. I would also look at your budget and see if there is any extra money you can squeeze out to make this go even faster. 