Frequent Explorer *

Is there a way to generate vendor service invoices based on hours worked and a preset hourly rate?

I've got a vendor who frequently generates inaccurate bills.  He reports to me the hours for days he works on various projects, and he totals total cost for the hours worked for each day, and then the total for the days on the bill (usually a month).  He always gets the hours correct, but frequently gets the daily calculation wrong or the overall total wrong.  I'm curious is there is a way in QB that I could enter the hours from a weekly or monthly bill and have QB calculate the total based on a preset hourly rate.