When a number is divided by 9, the quotient is 18 and the remainder is 7. What is the number?
一个数除以9，商是18，余数是7，这个数是多少．
<gadget id="calculator">18 * 9</gadget>
<output>162</output>

<gadget id="calculator">162 + 7</gadget>
<output>169</output>

<result>169</result>