In the examples the green text indicates user entries and the blue text indicates the results. The A, B, C, D indicate the entry positions as in the Proportions Calculator app and as shown on its icon.
Resize a 3264x2448 pixel image taken on an 8 megapixel camera to fit on a website where there is room for the image to be 216 pixels tall.
Reduce a 1080i video to standard definition width.
For a $48.40 dinner find the 15% tip amount.
Calculate the 7.5% sales tax amount for a $32.40 purchase.
If 2 1/2 cups of pancake mix makes 8 pancakes how much mix is needed for 12 pancakes.
Convert U.S. $24 to British Pounds with an exchange rate of 0.66.