Xiao Wang and Xiao Li share 46 extra-curricular books. If Xiao Wang gives Xiao Li 4 books, they have the same number of books. How many copies does Xiao Wang have?
小王和小李共有课外书46本，如果小王给小李4本，他们的书就一样多．小王有多少本．
<gadget id="calculator">46 / 2</gadget>
<output>23</output>

<gadget id="calculator">23 + 4</gadget>
<output>27</output>

<result>27</result>