□/8=10…□, what is the largest dividend.
□/8=10…□，被除数最大是多少．
<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>