"Project Hope" held a painting and calligraphy donation auction. The first time Mr. Li donated a painting and calligraphy was called 3,000 yuan, each subsequent time was called an increase of 200 yuan from the previous one, and the 12th time was called a sale. How much is the selling price?
"希望工程"举办一个书画，举行捐献拍卖会，李先生捐献一幅书画第一次叫作3000元，往后每次的叫作比上一次增加200元，第12次叫作成交卖出，卖出的价格是多少元？
<gadget id="calculator">12 - 1</gadget>
<output>11</output>

<gadget id="calculator">11 * 200</gadget>
<output>2_200</output>

<gadget id="calculator">3_000 + 2_200</gadget>
<output>5_200</output>

<result>5_200</result>