Eight friends planned a world tour. There were 6 boys and 2 girls in the group. While they were in Canada, 1 boy and 1 girl got ill and they were hospitalized. The rest of the friends (excluding the friends who got ill) decided to bear the cost of the hospital charge equally in starting but at the time of payment, 2 of them did not contribute. In order to pay the total bill amount, each of them has to pay Rs. 2000 more. Calculate the bill amount (in Rs.) charged by the hospital.