After a certain kind of peanut oil is pressed, the quality of the residue left is equivalent to 75% of the original quality. There are 300 kilograms of peanuts, how many kilograms of oil can be extracted?
某种花生榨油后，留下的残渣质量相当于原来质量的75%．现有花生300千克，可以榨多少千克油？
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">300 * (1/4)</gadget>
<output>75</output>

<result>75</result>