It depends on what body type you have and your level of activity. If you were tall and very active, you could easily eat 2500 calories a day, but if you were petite, you should eat around 1700 calories a day. I've heard that you aren't supposed to eat less than 1300 calories a day on a diet, but I've also heard 1500 calories. Try searching online for how many to eat based on your body and activity level.
2000
None.
About 1,600 calories a day.
A 55 year old female should eat about 1700 calories a day.
1,000,000 calories a day you a hole
1200
You should be taking in more calories than burning. About 200-500 calories more than you usual diet.
Diet drinks usually have no calories in them.
About 1,600 calories a day.
It does not matter what proportion of daily calories come from breakfast.
No more than 1200-1400.
2500-3500 calories per day