Simple as can be I say!
If you sit around and get little to no exercise your body is going to burn about 3475 calories a day on its own, and if you want to lose that 1.5lbs per week to meet your goals you need to eat on average about 2725 calories a day.
If you can get out and walk say 5 times a week for about 30 minutes and break a sweat, your body is going to burn on average about 3980 calories a day......and then you could still eat 3230 calories a day to meet your goals.
I can break it down into protein/carbs/fat grams to ideally consume each day if you want, or you can give the calorie reduction a shot first, and then we can work in the macronutrient breakdown of carbs/fat/protein.
I don't want to overload ya too quick.
Remember, it's not an exact science....for example if you eat say 2900 calories on one day, you could eat 2500 calories another day and the those two days of calorie intake would average right where you are shooting for.