Minus me for Android Wear

This is a game about subtraction. The goal is making the number in the center of screen to be 0.
The number in the center is minuend, and the numbers on the edge of the screen are subtrahends. For example: The minuend is 12. Once the -3 is clicked, the minuend becomes 9.
You have total 6 times to click subtrahends. Each time you click the subtrahend that must be equal or greater than the subtrahend you clicked before.