A stationery store buys a batch of ballpoint pens at 1 yuan each and sells them at 1.2 yuan. What is the profit after the sale is sold out?
文具店购进一批圆珠笔，每支1元，按1.2元出售，售完后获利多少
<gadget id="calculator">1.2 - 1</gadget>
<output>0.2</output>

<gadget id="calculator">0.2 / 1</gadget>
<output>0.2</output>

<result>0.2</result>