Channel	Sales Force	Average Discount	Units (mill.)	Sales (mill. KRW)	Percent Total
Independent	12	20.0%	1.4	3,133.5	9.4%
Drug Store	12	25.0%	7.8	14,541.7	43.5%
Hypermarket	12	35.0%	7.3	11,353.0	33.9%
Other	12	30.0%	0.9	1,570.5	4.7%
Wholesale	12	40.0%	1.9	2,856.2	8.5%
Total	60	30.2%	19.4	33,454.9	100.0%

Given the above data and a total sales force of 120, how many sales force should each channel get ? Explain.