The fruit shop shipped (3/5) tons of apples, sold (1/4) tons in the morning on the first day, sold some in the afternoon, and left (1/20) tons, how many tons were sold in the afternoon?
水果店运来苹果(3/5)吨，第一天上午卖出了(1/4)吨，下午又卖出了一些，还剩下(1/20)吨，下午卖出了多少吨？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(3/5) - (1/4) - (1/20)</gadget>
<output>3/10 = around 0.3</output>

<result>3/10 = around 0.3</result>