The oil yield of rapeseed is 42%, how many kilograms of oil can be squeezed out of 300 kg of rapeseed?
油菜籽的出油率是42%，300千克的油菜籽可以榨出多少千克的油？
<gadget id="calculator">42 / 100</gadget>
<output>21/50 = around 0.42</output>

<gadget id="calculator">300 * (21/50)</gadget>
<output>126</output>

<result>126</result>