The area of a triangle is 15 square centimeters, the base is 3 centimeters, what is the height?
三角形的面积是15平方厘米，底3厘米，高是多少．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">15 * (2/3)</gadget>
<output>10</output>

<result>10</result>