There is a batch of apples in the supermarket, 20% of the total is sold on the first day, and 25% of the total is sold on the second day, leaving 33 kilograms. How many kilograms are there in total in this batch?
超市里有一批苹果，第一天卖出总数的20%，第二天又卖了总数的25%，还剩下33千克，这批苹果一共有多少千克？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/5) - (1/4)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">33 / (11/20)</gadget>
<output>60</output>

<result>60</result>