So the master processed 9/ 14 of this batch of parts and the apprentice processed 5/ 14 of this batch of parts.

And because it takes 37 hours for the master to do it alone, the work efficiency of the master is 37 years 1.

The cooperation time of two people is 65438+9 of 04 divided by 1 of 37, which is 333 of 14.

During the cooperation time, the number of apprentices' processing is 30 times that of 04' s 65438+333, which is 9990 of 14.

And because the apprentice processed 65438+5/04 of these parts.

So 14 9990 divided by 14 5 is 1998.