A triangular vegetable field has a base length of 25 meters and a height of 8 meters. What is the area of this vegetable field in square meters?
一块三角形菜地，底边长25米，高8米，这块菜地的面积有多少平方米？
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<result>100</result>