Up, Up, and Away is a producer of kites and wind socks. Relevant data on the bottleneck operation in the shop for the upcoming fiscal year are given in the following table Item Demand forecast Lot size Standard processing time Standard setup time Kites 30,000 units/year 25 units 0.3 hour/unit 3.0 hours/lot Wind Socks 15,000 units year 80 units 0.8 hour/unit 4.0 hourslot The shop works two shifts per day, 8 hours per shift, 220 days per year. Currently, the company operates four machines, and desires a 25 percent capacity cushion. How many machines should be purchased to meet the upcoming year's demand without resorting to any short-term capacity solutions? The number of additional machines required isEnter your response rounded up to the next whole number)