How does the grep command extract the columns you need]

[How to extract the columns you need using the grep command]-Linux general technology-Linux technology and application information. The following is a detailed description. The data information is as follows:
11:02:34 | 60661704 | mail | unknown | shangdu.com | ihome0 | ihome0 | 60661704 | 127.0.0.1 | unknown | create | user_mobile
20080602/log_mail_users: 11:03:08 | 60661705 | mail | unknown | shangdu.com | ihome0 | ihome0 | 60661705 | 127.0.0.1 | unknown | create | user_mobile
20080602/log_mail_users: 11:03:22 | 60661706 | mail | unknown | shangdu.com | ihome0 | ihome0 | 60661706 | 127.0.0.1 | unknown | come | user_mobile
20080602/log_mail_users: 11:03:36 | 03982630013 | mail | unknown | shangdu.com | ihome0 | ihome0 | 03982630013 | 127.0.0.1 | unknown | create | user_mobile
20080602/log_mail_users: 11:04:08 | 60661707 | mail | unknown | shangdu.com | ihome0 | ihome0 | 60661707 | 127.0.0.1 | unknown | create | user_mobile
20080602/log_mail_users: 11:04:58 | 60661708 | mail | unknown | shangdu.com | ihome0 | ihome0 | 60661708 | 127.0.0.1 | unknown | come | user_mobile
20080602/log_mail_users: 11:04:59 | 60661709 | mail | unknown | shangdu.com | ihome0 | ihome0 | 60661709 | 127.0.0.1 | unknown | create | user_mobile

Question: 1.how can I extract the phone number code containing create(( TO THE my.txt file?
2. Make sure that the extracted phone number is not included in the phone number column.
Format: 60661704
60661705
60661706
3. Finally, count the total number of user accounts. Be sure to include "create" (for account opening)