Lili, a fourth-grade student, bought two books, a fairy tale and an underwater world. A fairy tale was 12.36 yuan, and a fairy tale was 4.25 yuan more than an underwater world. Lili paid the salesperson in total. How much?
四年级的丽丽同学买了两本书，分别是一本童话故事和一本海底世界，一本童话故事12.36元，一本童话故事比一本海底世界多4.25元，丽丽共付给售货员多少钱？
<gadget id="calculator">12.36 - 4.25</gadget>
<output>8.11</output>

<gadget id="calculator">8.11 + 12.36</gadget>
<output>20.47</output>

<result>20.47</result>