break up of taxable emouments financial yearwise

Gross salary in form 16 = 544991
Exempt u/s 10. =22060
Gross total =522931
Deduction u/s 80c =70113
Total income. = 452820
Tax on total income =10446
Tax deducted =10446
Tax payable = 00

Break up of taxable emoluments financial yearwise

For the financial Year from 1/3/15 to 29/02/16 = 82367
For the financial Year from 1/3/16 to 28/02/17. = -14931
For the financial Year from 1/3/17 to 28/02/18. = 477555
Total taxable emoluments. = 544991

How to calculate ?? and file which ITR??