In a division formula, the divisor is 9, the quotient and the remainder are equal, what is the largest dividend
在一个除法算式中，除数是9，商和余数相等，则被除数最大是多少
<gadget id="calculator">8 * 9</gadget>
<output>72</output>

<gadget id="calculator">72 + 8</gadget>
<output>80</output>

<result>80</result>