During the reading activity at school, Xiaohong and Xiaolan read 34 books in total, Xiaoxin and Xiaoming read 45 books in total, and Xiaohong and Xiaoming read 43 books in total. How many books have Xiaolan and Xiaoxin read in total?
在学校开展读书活动期间，小红和小兰一共读了34本书，小新和小明一共读了45本书，小红和小明一共读了43本书．小兰和小新一共读了多少本书？
<gadget id="calculator">45 - 43</gadget>
<output>2</output>

<gadget id="calculator">34 + 2</gadget>
<output>36</output>

<result>36</result>