500 / 1000: Per-bet limit 500, per-number max 1000 — a single bet on one number can be at most 500, and across all bets that number cannot exceed 1000.
Exhausted at 5000: If the per-number max is 5000 and the number already has 5000 in open bets, no further bets on that number are accepted until liability clears.
4800 + 1000 → 200 / 800: With a per-bet limit of 1000 and per-number max of 5000, a 4800 existing position allows only 200 in-house; the remaining 800 must be hedged.