The elder brother bought 7 exercise books, and Xiaoya bought 4 exercise books. The elder brother paid 11.1 yuan more than Xiaoya. How much did they pay in total?
哥哥买了7本练习本，小亚买了4本练习本，哥哥比小亚多付11.1元，两人共付了多少元？
<gadget id="calculator">7 + 4</gadget>
<output>11</output>

<gadget id="calculator">7 - 4</gadget>
<output>3</output>

<gadget id="calculator">11.1 / 3</gadget>
<output>3.7</output>

<gadget id="calculator">11 * 3.7</gadget>
<output>40.7</output>

<result>40.7</result>