The area of a triangle is 40cm**2, its height is 8cm, and its base is in cm.
一个三角形的面积是40cm**2，它的高是8cm，底是多少cm．
<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">40 * (1/4)</gadget>
<output>10</output>

<result>10</result>