Mohameddan law

Died son's part will be divided as his widow gets 1/4 part, his brothers get 1/3 part and his sisters get half of brother's part and then Doctrin of increase will apply for dividation.

Do it simple according to list of sharers if there are two or more than two sons and daughters than their part will be-
Sons part-2/3 (every one gets 2/15)
daughters part-1/3(every one gets 1/9)
Now died person part is 2/15, will be divided in his widow,brothers and sisters according to list of sharers
Part of widow, Brothers, and sisters according to list of sharers are-
Widow-1/4 or 3/12
Brothers-2/3 or 8/12
Sisters-1/2 0f 2/3 or 2/6 or 4/12
3/12 + 8/12 + 4/12 = 15/12 total
Now we decrese their part According to doctrin of increase as following-
Widow- 3/15
Brothers-8/15
Sisters-4/15
Now deceased 2/15 will be divided into them according to their part
So we can say a sons will get their 2/3 + 8/15 of 2/15
and daughters will get their 1/3 + 4/15 of 2/15