The height of a triangle is 18 centimeters, the area is 180 square centimeters, what is the base in centimeters?
一个三角形高是18厘米，面积是180平方厘米，底是多少厘米？
<gadget id="calculator">2 / 18</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">180 * (1/9)</gadget>
<output>20</output>

<result>20</result>