What does 4 5 6 8 go into?

To determine what number 4, 5, 6, and 8 can all go into, we need to find the highest common factor of these numbers. The highest common factor of 4, 5, 6, and 8 is 1 because these numbers do not share any factors other than 1. Therefore, 4, 5, 6, and 8 can all go into any number without leaving a remainder, as they do not have a common factor greater than 1.