Special Rounding
When you need to round to a certain number, e.g. 5 cents, you can use the MROUND function.
If cell A1 contains a number then the following formula will round the value to the closest 5 cent value.
=MROUND(A1,0.05)
The MROUND function does have some issues – see this blog post.
Please note: I reserve the right to delete comments that are offensive or off-topic.