How is the apartment rent divided if a family lives in it, after the children contributed to its finishing and furnishing to varying degrees?

The rent is to be divided based on what the first brother and the daughter paid, and what the second brother paid for purchasing furniture, as a debt on the apartment to be settled for each heir according to their share. Thus, the sons pay double what the daughter pays to cover the costs of finishing and purchasing furniture. After that, the apartment's rent is divided in the same manner, so that each son receives two shares and the daughter receives one share. As for the discarded furniture, it remains the property of all, and can be kept, divided, or sold and its price distributed.