The area of a triangle is 12 square meters, the base is 4 meters, and the height is in meters.
一个三角形的面积是12平方米，底是4米，高是多少米．
<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">12 * (1/2)</gadget>
<output>6</output>

<result>6</result>