A store sold two shirts a day, both at 240 yuan, one of which made a profit of 20%, and the other lost 20%, how much will the store sell after selling these two shirts? make no loss)
一个商店一天卖出了两件衬衫，都是240元，其中一件赚了20%，另一件亏了20%，这个商店卖出这两件衬衫后多少(填赚、亏多少元或不赚不亏)
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">240 / (6/5)</gadget>
<output>200</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">240 / (4/5)</gadget>
<output>300</output>

<gadget id="calculator">200 + 300</gadget>
<output>500</output>

<gadget id="calculator">240 + 240</gadget>
<output>480</output>

<gadget id="calculator">500 - 480</gadget>
<output>20</output>

<result>20</result>