There are 72 copies of "Science and Technology World" in the library, and the number of "Fairy Tale King" is twice that of "Science and Technology World". The number of "Little Cartoonists" is 104 fewer than the total number of these two books. How many copies of "Little Cartoonist" are there?
图书室有《科技天地》72本，《童话大王》的本数是《科技天地》的2倍．《小小漫画家》的本数比这两种书的总本数少104本．《小小漫画家》有多少本？
<gadget id="calculator">72 * 2</gadget>
<output>144</output>

<gadget id="calculator">144 + 72</gadget>
<output>216</output>

<gadget id="calculator">216 - 104</gadget>
<output>112</output>

<result>112</result>