bus travels from station A to station C via station B. When the bus arrives at station B, (2/5) passengers get off and 6 people get on the bus at the same time. At this time, the passengers on the bus are the original ( 3/4), when the car arrives at station B, how many passengers get off?
一辆公共汽车，从A站经过B站开往C站，汽车到达B站时，有(2/5)的乘客下车，同时又有6人上车，这时车上乘客是原来的(3/4)，汽车到达B站时，有多少乘客下车？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

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

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/4) - (3/5)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">6 / (3/20)</gadget>
<output>40</output>

<gadget id="calculator">40 * (2/5)</gadget>
<output>16</output>

<result>16</result>