The length of a field is 800 meters, and the length is twice the width. On average, 900 kilograms of corn can be harvested per hectare. How many kilograms of corn can this field harvest?
一块地的长是800米，长是宽的2倍，平均每公顷收玉米900千克，这块地的能收玉米多少千克？
<gadget id="calculator">800 / 2 / 10_000</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">900 * 800 * (1/25)</gadget>
<output>28_800</output>

<result>28_800</result>