Complex sentence: When a father died, unmarried daughters were given a share in their father's property, equal to one-fourth from every brother's share, since it is assumed that the married daughter had been given her share at marriage (Manu IX 118).
Split into simpler sentences: When a father died, unmarried daughters were given a share in their father's property, equal to one-fourth from every brother's share. It was assumed any married daughter had been given her share at marriage (Manu IX 118).