Please divide 10 liter of liquid medicine into 7 liter container and 3 liter container, and tell me how to divide it.

1. First fill the 7-liter container with 10 liter of liquid medicine-at this time, the 7-liter container is full, and there are only 3 liters left in the original 10 liter container;

2. Fill the 7-liter container with medicine-at this time, the 3-liter container is full, and there are only 4 liters left in the 7-liter container;

3. Pour the liquid medicine in the filled 3-liter container into the 10-liter container-at this time, the 3-liter container is empty, and the 10-liter container becomes 6 liters, leaving 4 liters in the 7-liter container;

4. Repeat the above steps 2 and 3, fill the 7-liter container with a 3-liter container, and then pour the liquid medicine in the 3-liter container into the 10-liter container. At this time, the 3-liter container is empty, and the 7-liter container remains 1 liter, and the 10-liter container contains 9 liters of liquid medicine;

4. Pour the 1 liter liquid medicine in the 7-liter container into the 3-liter container-at this time, the 3-liter container contains 1 liter liquid medicine, and the 7-liter container is empty;

5. Fill the 7-liter container with 10 liter liquid medicine container-at this time, the 7-liter container is full, and there are 2 liters left in the 10 liter container;

6. Fill the 3-liter container with a 7-liter container-at this time, the 7-liter container has 5 liters left, the 3-liter container is full, and the 10-liter container has 2 liters left;

7. Pour 3 liters of liquid medicine in the 3-liter container together with the remaining 2 liters of liquid medicine into the 10-liter container.

At this point, 10 liter of liquid medicine will be divided equally.