I've been playing around with the debt reduction calculator today, putting in different scenarios and checking that I'm on course to be debt free by December 31st 2009.-If I only paid the minimum amounts on my loans (£500) it would take me 48 months to clear the debt and would cost me £3,811 in interest.-To clear the debt by the target date, which gives me 20 months, I need to pay off £1,100 a month. The interest payments in this time will cost me £1,491.-Currently I can snowball £400 a...