Scenery Bookstore bought 420 science and technology books, and there are more comic books than science books (3/5). How many comic books are there?
风光书店买来科技书420本，连环画比科技书多(3/5)，连环画有多少本？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 + (3/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">420 * (8/5)</gadget>
<output>672</output>

<result>672</result>