store sells two kinds of goods at the same time in one transaction. The selling price of each kind of goods is 1200 yuan. If one kind of goods makes a profit of 20% and the other kind of goods loses 20% of the cost, how much will the store lose in this transaction?
某商店在一次买卖中，同时卖出两种货物，每种货物的售价均为1200元，若按成本一种盈利20%，另一种亏本20%，则这次交易商店赔多少元
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">1_200 / (4/5)</gadget>
<output>1_500</output>

<gadget id="calculator">1_500 - 1_200</gadget>
<output>300</output>

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

<gadget id="calculator">1_200 / (6/5)</gadget>
<output>1_000</output>

<gadget id="calculator">1_200 - 1_000</gadget>
<output>200</output>

<gadget id="calculator">300 - 200</gadget>
<output>100</output>

<result>100</result>