The area of a triangle is 0.39 square meters, the base is 1.3 meters, and the height is in meters.
一个三角形面积是0.39平方米，底是1.3米，高是多少米．
<gadget id="calculator">2 / 1.3</gadget>
<output>1.538462</output>

<gadget id="calculator">0.39 * 1.538462</gadget>
<output>0.6</output>

<result>0.6</result>