If the base of a parallelogram is 8 meters long and the height is 7 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长8米，高7米，与它等底等高的三角形的面积是多少平方米．
<gadget id="calculator">7 / 2</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">8 * (7/2)</gadget>
<output>28</output>

<result>28</result>