The table tennis team has 40 members, the track and field team has (5/4) the number of the table tennis team, and the swimming team has (3/5) the track and field team. How many people are there in the swimming team?
乒乓球队有队员40人，田径队人数相当于乒乓球队人数的(5/4)，游泳队的人数是田径队的(3/5)．游泳队有多少人？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">40 * (5/4) * (3/5)</gadget>
<output>30</output>

<result>30</result>