The school bought a total of 300 new books, of which (1/3) are story books, 20% are literary books, and the rest are comic books. How many comic books are there?
学校买来各种新书共300本，其中(1/3)是故事书，20%是文艺书，其余是连环画．连环画有多少本？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/3) - (1/5)</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">300 * (7/15)</gadget>
<output>140</output>

<result>140</result>