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by banish-m4 755 days ago
Your math is off because you're forgetting the beverage:

~600 kcal for a Big Mac

~600 kcal for Super Size fries (7 oz)

~500 kcal for a Super Size Coca Cola (42 oz)

1700 kcal/meal or ~5000 kcal/day if breakfast is the same as lunch and dinner

The calorie count for breakfast will likely vary. Note that orange juice contains more calories than Coca Cola per volume, but I don't remember a Super Size fountain orange juice existing.