Uncle Li planted pear trees on a 2-hectare hillside. Each pear tree covers an area of 8 square meters, and each pear tree can harvest 40 kilograms of pears. How many kilograms of pears can these pear trees harvest in total?
李大伯在2公顷的山坡上种梨树．每棵梨树占地面积是8平方米，每棵梨树可收梨40千克，那么这些梨树共可以收梨多少千克？
<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 * 40</gadget>
<output>100_000</output>

<result>100_000</result>