long-distance passenger bus is driving from place A to place B. Some (5/8) passengers got off the bus, and another 27 people got on the bus. How many passengers got off the bus?
一辆长途客运汽车从甲地开往乙地，中途有(5/8)的乘客下了车，又有27人上车，这时车上的乘客是原来乘客的(6/7)，中途下车的乘客有多少人？
<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 - (5/8)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(6/7) - (3/8)</gadget>
<output>27/56 = around 0.482143</output>

<gadget id="calculator">27 / (27/56)</gadget>
<output>56</output>

<gadget id="calculator">56 * (5/8)</gadget>
<output>35</output>

<result>35</result>