A certain engineering team wants to build a road. Team A alone completed the construction in 20 days, and team B completed the construction alone in 60 days. Now the two teams are jointly repairing, during which team A rested for 4 days, and team B rested for 16 days (non-stop work, does not exist Both teams rest on the same day), how many days did it take from start to finish?
某工程队要修一条公路，甲队单独修20天完工，乙队单独修60天完工，现在两队合修，其间甲队休息了4天，乙队休息了16天(不停工，不存在两队同一天休息)，求开始到完工共用了多少天？
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(1/20) * 4</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 60</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">(1/60) * 16</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">(1/5) + (4/15) + 1</gadget>
<output>22/15 = around 1.466667</output>

<gadget id="calculator">(1/20) + (1/60)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(22/15) / (1/15)</gadget>
<output>22</output>

<result>22</result>