Last year, the school library bought a total of 400 comic books and science books, of which comic books accounted for (2/5) of the total. This year, some comic books were bought again, and the number of science books remained unchanged. /25). How many comic books did you buy this year?
去年学校图书馆买来了连环画和科技书共400本，其中连环画占总数的(2/5)，今年又买来了一些连环画，科技书的本数不变，这时科技书占总数的(12/25)．今年买来连环画多少本？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">400 * (2/5)</gadget>
<output>160</output>

<gadget id="calculator">400 - 160</gadget>
<output>240</output>

<gadget id="calculator">12 / 25</gadget>
<output>12/25 = around 0.48</output>

<gadget id="calculator">240 / (12/25)</gadget>
<output>500</output>

<gadget id="calculator">500 - 400</gadget>
<output>100</output>

<result>100</result>