The area of a triangle is 40 square meters, the base is 5 meters, what is its height in meters?
一个三角形的面积是40平方米，底是5米，它的高是多少米．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">40 * (2/5)</gadget>
<output>16</output>

<result>16</result>