There are two mobile phones, A and B, in the mobile phone store, both of which are priced at 1980 yuan. The mobile phone A is a new product, which earns 10%, and the mobile phone B is an old model, which loses 10%. If one of these two mobile phones is sold today, Did the mobile phone store make or lose? How much did you earn or lose?
手机店有甲乙两款手机，售价都是1980元，甲款手机是新品，赚了10%，乙款手机是旧款，赔了10%，如果今天这两款手机各售出一部，这家手机店是赚了还是赔了？赚了或者赔了多少？
<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">1_980 / (9/10)</gadget>
<output>2_200</output>

<gadget id="calculator">2_200 * (1/10)</gadget>
<output>220</output>

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

<gadget id="calculator">1_980 / (11/10)</gadget>
<output>1_800</output>

<gadget id="calculator">1_800 * (1/10)</gadget>
<output>180</output>

<gadget id="calculator">220 - 180</gadget>
<output>40</output>

<result>40</result>