The divisor is a single digit, the quotient is 9, and the remainder is 8. What is the dividend.
除数是一位数，商是9，余数是8．被除数是多少．
<gadget id="calculator">9 * 9</gadget>
<output>81</output>

<gadget id="calculator">81 + 8</gadget>
<output>89</output>

<result>89</result>