Nine 0.6 are 2.7 more than 2 times of x, how to find x?
9个0.6比x的2倍多2.7，求x？
<gadget id="calculator">0.6 * 9</gadget>
<output>5.4</output>

<gadget id="calculator">5.4 - 2.7</gadget>
<output>2.7</output>

<gadget id="calculator">2.7 / 2</gadget>
<output>1.35</output>

<result>1.35</result>