The total length of the Chengdu-Kunming Railway is 1100 kilometers, and bridges and tunnels account for (2/5) of the total length. How many kilometers are the bridges and tunnels long?
成昆铁路全长1100千米，桥梁和隧道占全长的(2/5)．桥梁和隧道长多少千米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1_100 * (2/5)</gadget>
<output>440</output>

<result>440</result>