The school library bought 2,400 storybooks, and comic books were purchased less than storybooks (3/8). How many storybooks and comic books were bought altogether?
学校图书馆买来故事书2400本，连环画比故事书少买(3/8)，故事书和连环画一共买了多少本？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">2_400 * (5/8)</gadget>
<output>1_500</output>

<gadget id="calculator">2_400 + 1_500</gadget>
<output>3_900</output>

<result>3_900</result>