The fruit shop brings in 300 kilograms of apples, sells 20% of the total on the first day, and sells (1/3) of the total on the second day. How many kilograms less apples were sold on the first day than on the second day?
水果店运进300千克苹果，第一天卖出总数的20%，第二天卖出总数的(1/3)．第一天比第二天少卖出苹果多少千克？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">300 * (1/3)</gadget>
<output>100</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">300 * (1/5)</gadget>
<output>60</output>

<gadget id="calculator">100 - 60</gadget>
<output>40</output>

<result>40</result>