Netflix's product team is deciding which apps to improve first. They want to know how each age group splits its viewing across devices.
For each age_group, show the number of watch sessions on each device as columns: TV, Mobile, Laptop and Tablet.
Expected output
Example of the shape (made-up values):
| age_group | tv | mobile | laptop | tablet |
|---|---|---|---|---|
| 18-24 | 300 | 410 | 150 | 40 |
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