The area of a triangle is 4.5 square meters, the height is 0.5 meters, what is its base in meters?
一个三角形的面积是4.5平方米，高是0.5米，它的底是多少米．
<gadget id="calculator">2 / 0.5</gadget>
<output>4</output>

<gadget id="calculator">4.5 * 4</gadget>
<output>18</output>

<result>18</result>