60% of x is 0.6 more than 1.8. Ask for x?
x的60%比1.8多0.6．求x？
<gadget id="calculator">0.6 + 1.8</gadget>
<output>2.4</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">2.4 / (3/5)</gadget>
<output>4</output>

<result>4</result>