The ratio of the daily workload of A, B, and C is 3:2:1. There is an existing job. Three people cooperate to complete one-third of the whole work in 5 days. Then, A continues to work after a 4-day break, B continues to work after a 3-day break, and C does not take a break. How many days did it take to complete this work?
甲、乙、丙3人每天工作量的比是3：2：1．现有一件工作，3人合作5天完成了全部工作的三分之一，然后，甲休息4天后继续工作，乙休息3天后继续工作，丙没有休息．完成这件工作共经过多少天？
<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">4 * (1/30)</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">1 / 45</gadget>
<output>1/45 = around 0.022222</output>

<gadget id="calculator">3 * (1/45)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(2/15) + (1/15) + 1</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">1 / 90</gadget>
<output>1/90 = around 0.011111</output>

<gadget id="calculator">(1/90) + (1/30) + (1/45)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(6/5) / (1/15)</gadget>
<output>18</output>

<result>18</result>