Uncle Wang planted a total of 800 sunflowers this year, with an average of 0.2 kg of sunflower seeds per plant. If 0.25 kg of oil is extracted per kg of sunflower seeds, how many kg of oil can be extracted in total?
王叔叔今年共种了向日葵800棵，平均每棵葵花籽0.2千克．如果每千克葵花籽榨油0.25千克，共可榨油多少千克？
<gadget id="calculator">0.2 * 800 * 0.25</gadget>
<output>40</output>

<result>40</result>