When a number is divided by 9, the quotient is 23 and the remainder is 4. What is this number?
一个数除以9，商是23，余数是4．这个数是多少？
<gadget id="calculator">23 * 9</gadget>
<output>207</output>

<gadget id="calculator">207 + 4</gadget>
<output>211</output>

<result>211</result>