A customer buys 6 bottles of wine and pays 1.3 yuan for each bottle. When returning the empty bottles, the salesperson says that each bottle is 1.1 yuan less than the price of the wine. How much is the bottle returned by the customer?
一个顾客买6瓶酒，每瓶付1.3元，退空瓶时，售货员说，每只瓶比酒钱少1.1元，顾客退回的瓶钱多少元？
<gadget id="calculator">1.3 - 1.1</gadget>
<output>0.2</output>

<gadget id="calculator">0.2 / 2</gadget>
<output>0.1</output>

<gadget id="calculator">0.1 * 6</gadget>
<output>0.6</output>

<result>0.6</result>