A parallelogram-shaped vegetable field has a base of 200 meters and a height of 250 meters. The harvest of vegetables per hectare is 2.8 tons. How many tons are harvested in total?
一块平行四边形青菜地，底是200米，高是250米，每公顷收青菜2.8吨，共收多少吨？
<gadget id="calculator">250 / 10_000</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">200 * (1/40) * 2.8</gadget>
<output>14</output>

<result>14</result>