What is the share of each heir from the sum obtained from selling the plot of land left by a man who passed away along with his first wife, and his heirs are: his second wife, four sons and three daughters from his first wife, and one son from his second wife?

If the first wife dies before her husband, she does not inherit from him. The husband's inheritance is then divided among his living wife, who receives one-eighth, and his children (males and females), who receive the remainder, with the male receiving the share of two females. The share of each heir cannot be determined due to the insufficient information provided by the questioner. The questioner is advised to refer the matter to the Sharia court or consult with scholars of knowledge directly.