The area of a triangle is 36 square decimeters, the height is 4 decimeters, and the base is how many decimeters.
一个三角形的面积是36平方分米，高是4分米，底是多少分米．
<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">36 * (1/2)</gadget>
<output>18</output>

<result>18</result>