Doogs Donuts produces five varieties of pastries, which are sold to a national crockery chain: muffins, donuts, cookies, cream puffs, and fritters. Doogs operates a single shift for 1,800 hours per year. Annual demand, processing time per unit, lot size and setup time per lot are given in the figure. Assume that the times are for a work cell of four workers each.

Pastry	Demand forecast (units/year)	Processing time (minutes/unit)	Lot Size (# of pastries)	Setup time (minutes/setup)
Muffins	440,000	0.1	400	20
Donuts	600,00	0.1	300	5
Cookies	1,000,000	0.05	1,000	10
Cream Puffs	240,000	0.2	200	20
Fritters	180,000	0.2	300	15

Determine the required capacity (number of work cells). Show your steps so that partial credits are possible. [Hint: figure out the total required time in hours, and compare to the available hours per shift].