How do I round to two decimal places while using exponentials?

I have the following that I'm trying to display with two trailing decimal places. I looked around the forum and this seems to be the answer, but this doesn't work.

Set tmpBill3 to log10(10^(tmpBill3)*noise_bill2)

"Bill's Yield: " & round(10^((tmpBill3 * 100) / 100))

An example value should look something like this: 12.45

"Bill's Yield: " & (round(tmpBill3 * 100) / 100)