Only type in the grades in the boxes on the left side. Pay attention to the box on the right, near middle, because this will calculate what you enter in the left-hand side boxes.
DO NOT TYPE IN THE BOXES ON THE RIGHT, NEAR MIDDLE, BECAUSE IT WILL NOT CALCULATE YOUR GRADES. Pay attention to the "do not type in here" message above.
This will assist you in scheduling your study time. Prioritize your time according to what percentage you must achieve in each of your classes to maintain the grade you deem necessary.