□/8=205…□, what is the largest dividend.
□/8=205…□，被除数最大是多少．
<gadget id="calculator">205 * 8</gadget>
<output>1_640</output>

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

<gadget id="calculator">1_640 + 7</gadget>
<output>1_647</output>

<result>1_647</result>