Short term capital gain

Hi,

If i purchase say 150 no. X shares @ 95 & brokerage & other charges Rs. 12 & STT Rs. 15, so total purchase cost is Rs.14277(150*98 +12+15) Now i sell 100 shares in 2 diff lot of 50 each one at 98 & other at 102. 

First lot of 50 @ 98 Brokerage & other charges Rs. 5 & STT Rs. 5 total sales consideration received Rs. 4890(50*98 -5-5)

Second Lot 50 @ 102 Brokerage & other charges Rs. 5 & STT Rs. 6 total sales consideration received Rs. 5089 (50*102 -5-6)

Now how will the stgc calculated?