A triangular wheat field has a base length of 350 meters and a height of 400 meters. What is the area of the wheat field in square meters?
一块三角形麦地的底长350米，高400米，这块麦地的面积是多少平方米？
<gadget id="calculator">400 / 2</gadget>
<output>200</output>

<gadget id="calculator">350 * 200</gadget>
<output>70_000</output>

<result>70_000</result>