The oil yield rate of a certain kind of peanut is 42%, how many kilograms of peanut oil can be extracted from 500 kilograms of this peanut kernel?
某种花生的出油率为42%，500千克的这种花生仁能榨花生油多少千克？
<gadget id="calculator">42 / 100</gadget>
<output>21/50 = around 0.42</output>

<gadget id="calculator">500 * (21/50)</gadget>
<output>210</output>

<result>210</result>