| (5) | Reconciliation of GAAP Net Cash Provided by Operating Activities to Free Cash Flow** |
| Three Months Ended | Year Ended | |||||||||||||||||||
| December 25,
2021 | September 25,
2021 | December 26,
2020 | December 25,
2021 | December 26,
2020 | ||||||||||||||||
| GAAP net cash provided by operating activities | $ | 822 | $ | 849 | $ | 554 | $ | 3,521 | $ | 1,071 | ||||||||||
| Operating cash flow margin % | 17 | % | 20 | % | 17 | % | 21 | % | 11 | % | ||||||||||
| Purchases of property and equipment | (86 | ) | (85 | ) | (74 | ) | (301 | ) | (294 | ) | ||||||||||
| Free cash flow | $ | 736 | $ | 764 | $ | 480 | $ | 3,220 | $ | 777 | ||||||||||
| Free cash flow margin % | 15 | % | 18 | % | 15 | % | 20 | % | 8 | % | ||||||||||
