Tax calculation for male senior citizen

Both the calculations are wrong.  After taking 80C deduction the Total taxable income is going above Rs 500000.  So 5lacs shud be deducted from the total income & tax @ 20% shud be calculated on the balance.  Given below is the calculations:

No tax due is  Rs. 25000+37778=.Rs.62778 Ofcourse add cess.

Tax due is ₹.62,777.plus cess.

Pension Income  - 7,88,887

(-) Deduction u/c VI A - 1,00,000

Total Income  - 6,88,887

Tax on Above 

First 2,50,000 - NIL

(5,00,000 - 2,50,000)*10%  - 25,000

(6,88,887 - 5,00,000)*20%  - 37,777

                                                    62,777

Add: edu cess & SHEC           +1883

  Tax Payable                             64,660