Soybeans are planted in a rectangular field that is 500 meters long and 300 meters larger than the width. If 4 tons of soybeans can be harvested per hectare, how many tons of soybeans can be harvested in this field?
一块长500米，比宽多300米的长方形地里种了大豆，如果每公顷可收大豆4吨，这块地一共可收多少吨大豆？
<gadget id="calculator">500 - 300</gadget>
<output>200</output>

<gadget id="calculator">200 / 10_000</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">500 * (1/50) * 4</gadget>
<output>40</output>

<result>40</result>