The rapeseed with an oil yield of 42% can squeeze out 2100 kilograms of oil, how many kilograms of rapeseed are shared?
出油率是42%的油菜籽榨得2100千克的油，共用去油菜籽多少千克？
<gadget id="calculator">42 / 100</gadget>
<output>21/50 = around 0.42</output>

<gadget id="calculator">2_100 / (21/50)</gadget>
<output>5_000</output>

<result>5_000</result>