The oil yield rate of an oil plant seed is 42%, and 856.8 kg of oil is to be squeezed. How many kg of this oil plant seed are needed?
一种油料植物种子的出油率是42%，要榨油856.8千克，需要这种油料植物种子多少千克？
<gadget id="calculator">42 / 100</gadget>
<output>21/50 = around 0.42</output>

<gadget id="calculator">856.8 / (21/50)</gadget>
<output>2_040</output>

<result>2_040</result>