If the base of a triangle is 0.4 meters and the height is 0.6 meters, what is the area of a parallelogram with the same base and height in square meters?
一个三角形的底是0.4米，高是0.6米，与它等底等高的平行四边形面积是多少平方米．
<gadget id="calculator">0.6 / 2</gadget>
<output>0.3</output>

<gadget id="calculator">0.4 * 0.3</gadget>
<output>0.12</output>

<gadget id="calculator">0.12 * 2</gadget>
<output>0.24</output>

<result>0.24</result>