How many times do you subtract 25 from 800 in a row, and the final result is 750.
800连续减多少次25，最后结果是750．
<gadget id="calculator">800 - 750</gadget>
<output>50</output>

<gadget id="calculator">50 / 25</gadget>
<output>2</output>

<result>2</result>