If x+1.6=8.6, then 1.5x=how much.
如果x+1.6=8.6，那么1.5x=多少．
<gadget id="calculator">8.6 - 1.6</gadget>
<output>7</output>

<gadget id="calculator">1.5 * 7</gadget>
<output>10.5</output>

<result>10.5</result>