I have below Data
| Item | Date | Sales |
| Chair | 01/01/2024 | 100 |
| Chair | 02/01/2024 | 200 |
| Chair | 03/01/2024 | 300 |
| Chair | 04/01/2024 | 200 |
| Chair | 05/01/2024 | 200 |
| Chair | 06/01/2024 | 200 |
I need to calculate daily sales average like output below,.
| Item | Date | Sales | Sales Avg |
| Chair | 01/01/2024 | 100 | 100 |
| Chair | 02/01/2024 | 200 | 150 |
| Chair | 03/01/2024 | 300 | 200 |
| Chair | 04/01/2024 | 200 | 200 |
| Chair | 05/01/2024 | 200 | 200 |
| Chair | 06/01/2024 | 200 | 200 |
I'm wondering which macro does this for me, can some one help?