A triangular vegetable field has a base length of 25 meters and a specific height of 3 meters. What is the area of this vegetable field?
一块三角形菜地，底边长25米，比高长3米，这块菜地的面积是多少？
<gadget id="calculator">25 - 3</gadget>
<output>22</output>

<gadget id="calculator">22 / 2</gadget>
<output>11</output>

<gadget id="calculator">25 * 11</gadget>
<output>275</output>

<result>275</result>