How many consecutive 8.05s are subtracted from 80.5 to get 8.05.
从80.5里面连续减去多少个8.05后得8.05．
<gadget id="calculator">80.5 / 8.05</gadget>
<output>10</output>

<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<result>9</result>