I am beginner in intraday of NSE equity shares in zerodha. I failed to calculate average some time when i play multiple times on same share in a day.

during morning hours: For example if i bought 1000 number of HDFC shares at 500/- and it gave a spike of 515/- in a 5 minutes, i sold. so my profit would be (1000*5=5000).

during afternoon hours: If again i brought same 2000 number of HDFC shares at 490/- and its gave spike of 494/- in 10 minutes , i sold. i expected my profit should be (2000*4=8000).

so total profit of the day is 4K+ 8K= 12K. but some of my calculation is wrong. i am not seeing 12K, some thing less than that. what is exact calculation?

If possible explain for below scenarios as well. Morning: Sale-buy(short) Afternoon: Buy-sale

Morning:Buy-sale Afternoon: sale-buy

Morning: Sale-Buy(short) Afternoon: sale-buy(short)