A parallelogram with a base of 10 cm and a height of 6 cm is the area of a triangle with the same base and height.
一个平行四边形底是10厘米，高6厘米，与它等底等高的三角形的面积是多少．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">10 * 3</gadget>
<output>30</output>

<result>30</result>