The area of a triangle is 72 square meters, the height is 9 meters, how many meters is the base?
一个三角形的面积是72平方米，高是9米，底多少米？
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">72 * (2/9)</gadget>
<output>16</output>

<result>16</result>