Divide by 23, the quotient and remainder are both 12, what is the dividend.
除以是23，商与余数都是12，被除数是多少．
<gadget id="calculator">23 * 12</gadget>
<output>276</output>

<gadget id="calculator">276 + 12</gadget>
<output>288</output>

<result>288</result>