□/31=25…□, when the remainder is the largest, what is the dividend
□/31=25…□，当余数最大时，被除数是多少
<gadget id="calculator">31 * 25</gadget>
<output>775</output>

<gadget id="calculator">31 - 1</gadget>
<output>30</output>

<gadget id="calculator">775 + 30</gadget>
<output>805</output>

<result>805</result>