In □/8=10…△, when △ is the largest, what is □ at this time
在□/8=10…△中，△最大时，此时□是多少
<gadget id="calculator">8 * 10</gadget>
<output>80</output>

<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">80 + 7</gadget>
<output>87</output>

<result>87</result>