□/7=123…★, what is the largest in □.
□/7=123…★，□里最大是多少．
<gadget id="calculator">7 * 123</gadget>
<output>861</output>

<gadget id="calculator">7 - 1</gadget>
<output>6</output>

<gadget id="calculator">861 + 6</gadget>
<output>867</output>

<result>867</result>