The area of a triangle is 8 square meters, the height is 4 meters, what is the length of the base in meters?
三角形的面积是8平方米，高是4米，底边长为多少米．
<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">8 * (1/2)</gadget>
<output>4</output>

<result>4</result>