The school library bought a batch of new books. Among them, there are 126 popular science books, which is exactly three times that of comic books. How many books are there in total?
学校图书馆买来一批新书．其中科普读物126本，正好是连环画的3倍．两种书一共有多少本？
<gadget id="calculator">126 / 3</gadget>
<output>42</output>

<gadget id="calculator">126 + 42</gadget>
<output>168</output>

<result>168</result>