Each soft fiber below 15m is counted as 0.29 man-day, and one fiber exceeding 15m is counted as (0.29 man-day+(the length of the part exceeding 15m is X0.02 man-day);

Here's an example:

1, and the working day of an 8m flexible optical fiber is1* 0.29;

The working day of 2.20m flexible optical fiber shall be 1*0.29+5*0.02.