The distance between A and B is 300km. A passenger car starts from A and travels on the expressway for the full length (1/3) and then on a section of the road for the full length (2/5). Ask: This car arrives at How many kilometers does B need to drive?
甲乙两地相距300km，一辆客车从甲地出发，先在高速公路上行驶全长的(1/3)，然后在一段公路上行驶全长的(2/5)，问：这辆汽车到达乙地还需行驶多少千米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (1/3) - (2/5)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">300 * (4/15)</gadget>
<output>80</output>

<result>80</result>