When a number is divided by 7, the quotient is 9, and when the remainder is the largest, what is the dividend?
一个数除以7，商是9，余数最大时，被除数是多少
<gadget id="calculator">7 * 9</gadget>
<output>63</output>

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

<gadget id="calculator">63 + 6</gadget>
<output>69</output>

<result>69</result>