If you have a
PC, you can go here to find a scientific
calculator to calculate log (logarithm) reduction if you like:
Click the start menu, then open ‘programs’ or ‘all programs’.
From there click on ‘accessories’, then ‘calculator’.
Once the calculator is open, go to its ‘view menu’ and make sure it’s set to scientific, rather than standard mode.
Now, just enter your numeric viral load, in your case 8,650,000.