calculation

price is displayed to the right of the image.
quantity is displayed to the right.
it is displayed by multiplying the price and quantity.
please choose the button that matches calculated result.
there is no need to think about consumption tax.

If there is a match, next button will be displayed.
choose the next button to display the next question.
if you wrong answer, display game over.
if you want to restart,
please tap retry button.