how to calculate capital gain or loss in mutual funds

sunita (article) (80 Points)

23 June 2016  
I am filling my dad return he is investing mutual fund in hdfc equity fund SIP from 2007 and in 2014 March he just redeem the 1200 share and balance 1000 share was redeem in April 2014.
how will I calculate capital gain or loss in this and in itr wat is the treatment?
plz reply