Doing Math with a Receipt
Purpose of the toolMake your own receipt and calculate what you'll have to pay.
Explanation of the toolPress 'Settings' to choose a certain value. Then press 'Save settings' to go buy groceries.
Drag the products onto the receipt.
Do you want to move products on the receipt? Use the hand to move the item.
Calculate what you have to pay and put the amount in the grey area. Then press the 'Check' button.