3 times of a number is 9 greater than 12 0.15, find this number.
一个数的3倍比12个0.15大9，求这个数．
<gadget id="calculator">0.15 * 12</gadget>
<output>1.8</output>

<gadget id="calculator">1.8 + 1.8</gadget>
<output>3.6</output>

<result>3.6</result>