You are calculating MCRT (SRT) for an activated sludge system using the reference equation below. MCRT (days) = [MLSS (mg/L) × aeration volume (MG) × 8.34] ÷ {[WAS TSS (mg/L) × WAS flow (MGD) × 8.34] + [effluent TSS (mg/L) × effluent flow (MGD) × 8.34]} Plant data (today): - Aeration basins: 2 basins, each 120 ft (L) × 60 ft (W) × 15 ft (SWD) - MLSS in aeration basins = 3,000 mg/L (MLVSS = 2,100 mg/L) - Influent flow = effluent flow = 2.5 MGD - Effluent TSS = 12 mg/L - WAS flow = 0.045 MGD - WAS TSS = 8,000 mg/L - RAS flow = 1.5 MGD (provided for information) Using 1 ft³ = 7.48 gal, what is the MCRT (days), rounded to the nearest tenth?