factory has four workshops, the number of people in the first workshop is (1/2) that of the other three workshops, the number of people in the second workshop is (1/3) that of the other three workshops, and the number of people in the third workshop is the number of the other three workshops. (1/4) of the number of people in the first workshop, what fraction of the number of people in the fourth workshop is the number of the other three workshops?
某工厂有四个车间，第一车间的人数是其余三个车间人数的(1/2)，第二车间的人数是其余三个车间人数的(1/3)，第三车间人数是其余三个车间人数的(1/4)，第四个车间的人数是其余三个车间的几分之几？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/3) - (1/4) - (1/5)</gadget>
<output>13/60 = around 0.216667</output>

<gadget id="calculator">(1/3) + (1/4) + (1/5)</gadget>
<output>47/60 = around 0.783333</output>

<gadget id="calculator">(13/60) / (47/60)</gadget>
<output>13/47 = around 0.276596</output>

<result>13/47 = around 0.276596</result>