30 times of a number is 540, what is the 12 times of this number?
一个数的30倍是540，这个数的12倍是多少．
<gadget id="calculator">540 / 30</gadget>
<output>18</output>

<gadget id="calculator">18 * 12</gadget>
<output>216</output>

<result>216</result>