i am trying to develop a strategy with pyramiding ( or scale in and scale-out), but i am not aware of p/l calculating method, here i am attaching a screenshot of paper trade please help me understanding p/l calculation method in this kind of trade book -
bought @
1 unit @ 1762
1 unit @ 1793
1 unit @ 1816
1 unit @ 1796
1 unit @ 1899
1 unit @ 1877
1 unit @ 1868
1 unit @ 1980
1 unit @ 1939
sold all 9 unit @ 1906
Add all your units … divide all unite by its count … it is called average price…
now subtract 1906 with average price… that is your profit.
Simple as f man… Just Calculate total price of all positions and divide it by units, then subtract 1906 from that total you get and multiply by units you purchased.
Stop discouraging him , look at his DP , he looks like 5th grader , good that he developing some system 
He just got his packet money 10 rupees after all taxes.Go get dairy milk kiddo.
When I read the word pyramiding trade in the question, got excited that will I will get to learn something new. But after reading brief description, felt like I fell for click bait 
Rather the question should have been How to calculate averages
