new to this, the answer is probably right in front of me and I don't know it!

I use a speadsheet to calculate several types of daily information. There
are several cells for each day, each with it's own calculations. Towards the
end of the range of cells, I would like one of the final numbers to be
rounded, so that all functions after this work off of the rounded number. Is
there a way to do this without adding an extra column for the rounding
function?

Formula looks like this: =I9*.45

It always gives me a dollar amount with odd cents, and I'd rather have an
even number. How do I make the round function part of this formula.
(as in, if I9 = $65.20, the formula gives me $29.34, where as I would prefer
$29.00)