If the base of a parallelogram is 6.4 meters and the height is 2.5 meters, what is the area in square meters of a triangle with the same base and height?
一个平行四边形的底是6.4米，高是2.5米，与它等底等高的三角形的面积是多少平方米．
<gadget id="calculator">2.5 / 2</gadget>
<output>1.25</output>

<gadget id="calculator">6.4 * 1.25</gadget>
<output>8</output>

<result>8</result>