What is the legal share of the heirs in the estate of the aforementioned man, given the existence of a will that includes: "My father gave me land, and I built a residential and commercial structure upon it. As for my paternal half-brother, he asked his father to buy him a house in another area, meaning in the city," with the additions: "that he (the testator) should not inherit with his brother, and as for the daughters, my father entrusted them to me"?