The area of a triangle is 20 cm, the base is 8 cm, and the height is in cm.
一个三角形的面积是20厘米，底是8厘米，高是多少厘米．
<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">20 * (1/4)</gadget>
<output>5</output>

<result>5</result>