توضیحات:

When you start the game, there is a large number in the upper left and a small number and symbol in the middle.

Create an expression that will be 0 when calculated for a large number, using the number and symbol in the middle.

When the formula is complete, press the equal button.

When the equal button is pressed, the answer to the formula is displayed.

When the answer reaches 0, the score will be added.

nobiru blog
https://nobiru.click/app/android/a0100/b0060/c0063/0063-make_zero-ja.html