It’s not evenly divided. No matter how many shikigami you put, you will get so much experience. You can put up to 6. For example, if it is a 1200 experience/h card, each shikigami can get 1200 experience per hour. You don’t need to keep collecting experience, because the experience symbol will appear in a few seconds. If you keep collecting experience, you will be exhausted. . You can wait until the time is up before collecting it. You have a 12-hour card. After 12 hours, you will receive one ***. It is 12 hours of experience. As long as you don't click, you will not receive experience. Therefore, you can also change shikigami midway and then click again to receive experience.
If you still don’t understand, you can ask questions