The oil yield of a certain kind of peanut kernel is about 42%. How many kilograms of this kind of peanut kernel are needed to extract 1050kg of oil?
某种花生仁的出油率约是42%，要榨1050kg的油，需要这种花生仁多少千克？
<gadget id="calculator">42 / 100</gadget>
<output>21/50 = around 0.42</output>

<gadget id="calculator">1_050 / (21/50)</gadget>
<output>2_500</output>

<result>2_500</result>