If a certain number is divided by 13, the quotient is 9 and the remainder is 8, what is the certain number equal to?
某数被13除，商是9，余数是8，则某数等于多少．
<gadget id="calculator">13 * 9</gadget>
<output>117</output>

<gadget id="calculator">117 + 8</gadget>
<output>125</output>

<result>125</result>