How much weight will i lose if i exersice 4 hrs?

i will exersice for 3-4 hours a day walking,eliptical,pilates,and kickboxing. I will eat 1400 calories a day of healthy food. Im 16 weigh 170 pounds and im 5'9. I will do this for a month. Then ill maintain my weight loss with healthy eating and exercise when im done.