For a given term of compound-interest GIC, the nominal interest rate with annual compounding is typically 0.125% higher than the rate with semiannual compounding and 0.25% higher than the rate with monthly compounding. Suppose that the rates for five-year GICs are 5.00%, 4.875%, and 4.75% for annual, semiannual, and monthly compounding, respectively. How much more will an investor earn over five years on a $10,000 GIC at the most favourable rate than at the least favourable rate?