Click the buttons with symbols to switch to that operation. Then slide the slider for the variables to get different numbers. (After you click on the slider, press left and right arrow keys to get more precise amounts.) Press space to get the answer.
Added extra numbers to variables 1 and 2. You can now put in any number from -10000 to 10000. (only works for addition subtraction multiplication and division) Nothing down here, sorry :(
