I am having trouble getting either a product or sum to round to the nearest
cent.

How do I do this?

Example 6015.54x1.4=8421.76, However when I do this in excel, it ends up
being 8421.75 for some reason.

Or if I choose to add 6015.54 and 2406.22 (the latter a result of
multiplying the former by .4) it still gives me 8421.75...the actual
calculation works out to 8421.756, so obviously it is just dropping the last
number (or rounding it down to the nearest fifth one hundredth?)...I'd prefer
seeing as how I am working with currency that it rounded the final number
appropriately.

Help?