Answer Happy

Hi, I need help with this question:
Estimate the bare cost of providing and installing 12 sliding windows 5 ft x 4 ft including screen. Assume vinyl clad, premium with double insulating glass. The job will be in Miami, Florida. CCI for Miami, Florida: Materials 97.9%; Labor 69.5%; Total 90.7% RS Means Item Description Bare Costs Total Unit Inc. O&P Mat. Labor Equip. Total No. 08 52 16.70 Vinyl clad window, Each Pemium, double insulated 900 39.0 (ea) glass, sliding 4 ft x 5 ft 939 1,050 1100 08 52 Window screens over 3 166.10 S.F.. 1 1/8inch frames. 0020 S.F. 4.80 1.88 6.68 8.20