A mall sells two pieces of clothing at the same time, each for 150 yuan, but one makes a profit of 20%, and the other loses 20%. Does the mall make a profit or a loss when it sells these two pieces of clothing? (Use calculations to explain why.)
商场同时卖出两件衣服各卖得150元，但其中一件赚了20%，另一件亏了20%，这个商场卖出这件这两件衣服是赚了还是亏了？(用计算来说明理由．)
<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">150 / (6/5)</gadget>
<output>125</output>

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

<gadget id="calculator">150 / (4/5)</gadget>
<output>375/2 = around 187.5</output>

<gadget id="calculator">125 + (375/2)</gadget>
<output>625/2 = around 312.5</output>

<gadget id="calculator">150 * 2</gadget>
<output>300</output>

<gadget id="calculator">(625/2) - 300</gadget>
<output>25/2 = around 12.5</output>

<result>25/2 = around 12.5</result>