A piece of triangular land is 30 meters long at the bottom and 25 meters high. If 1.4 kilograms of wheat is harvested per square meter, how many kilograms of wheat will be harvested from this land?
一块三角形土地底长30米，高25米，如果每平方米收小麦1.4千克，这块地共收小麦多少千克？
<gadget id="calculator">25 / 2</gadget>
<output>25/2 = around 12.5</output>

<gadget id="calculator">30 * (25/2)</gadget>
<output>375</output>

<gadget id="calculator">375 * 1.4</gadget>
<output>525</output>

<result>525</result>