There are 40 people in the chorus, and the number of boys is 3/5 of the number of girls. How many fewer boys than girls in the chorus?
合唱小组有40人，其中男生人数是女生人数的(3/5)，合唱小组中男生比女生少多少人？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 + (3/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">40 / (8/5)</gadget>
<output>25</output>

<gadget id="calculator">40 - 25</gadget>
<output>15</output>

<gadget id="calculator">25 - 15</gadget>
<output>10</output>

<result>10</result>