(See inside for entities) The A section B section C section K section E section V section U section D section and R section (and Y section) has 1500 rooms but the S section has 1400, the l section (and M section) has 2500, the O section G section has 1700 and the Origin has 200. Subsections always have 200 rooms.
Credits to scratchmasterrid volton3 loosh24Ge ivor1023 and SuperCoolEnzo (also 120-ROOMS and saltypluto)