M₁, M₂, M₃ and M₄ bought a computer and decided to share the time of each day according to the money they contributed. The price of the computer in rupees as well as the hours of the day the computer is used (greater than 10), are integers. M₁ contributed Rs. 5,000, M₂ contributed 25 percent of the total money, M₃ uses 20 percent of the time of the computer and M₄ uses it for 2 hours. If another person M₅ wanted to use the remaining free hours at the computer each day by paying them a rent of Rs. 100 for certain number of days after which he could have it free because by then, he would have contributed as much money as he had contributed at the purchase for his share of time of computer. How long would he have to pay the rent for?