We have been around a few car dealerships over the last week or so and have seen the sales people take out paper, pen and calculator every time someone asked them about car finance. Very inefficient.
I got the price list for Mitsubishi yesterday and having scanned it in I first of all used Goal Seek and the PMT function to check their monthly repayment calculations. In this case, i disagree slightly with their results:
Secondly, i added a combobox that allows us to select a car from their list of available cars. That then allows me to use a combination of INDEX and VLOOKUP to find these details automatically:
Monthly repayments over:
See screenshots below:
One click is all you need!