A utensil-manufacturing firm produced and sold 500 utensils in the month of September 2013. The cost and revenue figures for the month for the month of September 2013 are given below:

Direct material = Rs. 10,00,000

Indirect material = Rs. 30,000

Direct labour = Rs. 5,00,000

Indirect labour = Rs. 30,000

Fixed FOH = Rs. 40,000

Variable FOH = Rs. 5,00,000

Revenue = Rs. 25,00,000

Find the contribution margin and the breakeven monthly number of utensils