When a number is divided by 18, the quotient is 12. When the remainder is the largest, what is the dividend.
一个数除以18时，商是12，当余数最大时，被除数是多少．
<gadget id="calculator">12 * 18</gadget>
<output>216</output>

<gadget id="calculator">216 + 17</gadget>
<output>233</output>

<result>233</result>