The area of a triangle is 240m**2, the height is 40m, and the base is in m.
一个三角形的面积是240m**2，高是40m，底是多少m．
<gadget id="calculator">2 / 40</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">240 * (1/20)</gadget>
<output>12</output>

<result>12</result>