A fruit farmer plants pear trees on a barren slope of 2 hectares. Each pear tree covers an area of 8 square meters, and each pear tree can harvest 400 kg of pears. How many kilograms of pears can these pear trees harvest in total?
一个果农在2公顷的荒坡上种梨树，每棵梨树的占地面积是8平方米，每棵梨树可收梨400千克．这些梨树一共可以收多少千克梨？
<gadget id="calculator">2 * 10_000</gadget>
<output>20_000</output>

<gadget id="calculator">20_000 / 8</gadget>
<output>2_500</output>

<gadget id="calculator">2_500 * 400</gadget>
<output>1_000_000</output>

<result>1_000_000</result>