Number on the Top-Right corner is what number you need to type out on the map. Left arrow to go back (Like backspace.) Right arrow to enter what you typed. Up arrow to zoom in. Down arrow to zoom out. Click and drag the map around. Press a key to type it out. Put your mouse in the bottom-right corner to check what you have typed.
When you type out all 15, you will be given all the answers to check over your answers.