A store manager purchases two identical television sets of the same brand and model from the wholesale department at two different prices. Later, the two TV sets were sold at a price of 990 yuan each. As a result, one made a profit of 10%, while the other lost 10%. Please do the math for this manager, after he sold these two TVs, did he make money? loss? Still break even?
商店经理以两种不同的价格从批发部购得同一品牌型号的两台同样的电视机．后来又都按990元一台的价格把这两台电视机卖了出去．结果一台赚了10%，而另一台则亏了10%．请帮这位经理算算，他把这两台电视机卖出去以后，到底是赚了？亏了？还是不赚不亏？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">990 / (9/10)</gadget>
<output>1_100</output>

<gadget id="calculator">1_100 - 990</gadget>
<output>110</output>

<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">990 / (11/10)</gadget>
<output>900</output>

<gadget id="calculator">990 - 900</gadget>
<output>90</output>

<gadget id="calculator">110 - 90</gadget>
<output>20</output>

<result>20</result>