The area of a triangle is 2.1 square meters, its height is 1.2 meters, and its base is in meters.
一个三角形的面积是2.1平方米，它的高是1.2米，底是多少米．
<gadget id="calculator">2 / 1.2</gadget>
<output>1.666667</output>

<gadget id="calculator">2.1 * 1.666667</gadget>
<output>3.500001</output>

<result>3.500001</result>