Xiao Fan has 48 comic books, Xiao Cheng has 36 comic books, as many books as Xiao Fan gives to Xiao Cheng, both of them have the same number of comic books.
小凡有48本连环画，小成有36本连环画，小凡给小成多少本，俩人的连环画就同样多．
<gadget id="calculator">48 + 36</gadget>
<output>84</output>

<gadget id="calculator">84 / 2</gadget>
<output>42</output>

<gadget id="calculator">48 - 42</gadget>
<output>6</output>

<result>6</result>