This is theoretical.
Say you were a Town Hall 10 trying to farm Level 11 Walls in Champions League. Say you used an army of 240 barbarians, which take the shortest amount of time possible to train. Also, assume that every time you attacked, the first base you find has full storages and collectors. Before the battle, you would queue barbarians in your barracks to be ready for the next battle and collect the loot from your gold mines. You wait for the 30 seconds at the beginning of the battle to expire, manage to take all the gold from the collectors and storages using every single barbarian, destroy the town hall, and wait till the time runs out. Lastly, assume that you never spend any gold on anything else other than walls or search cost, you never ran out of elixir, and nobody attacks you and takes gold. Even if all these conditions were true, it would still take a while to farm Zap Walls. Here's the math:
3000 Gold Per Hour * (16.5 Minutes / 60 Minutes) * 7 = Collector Production
5775 Gold = Collector Production
Max Storage Loot + Max Collector Loot + League Bonus + Town Hall Gold - Search Cost + Collectors = Maximum Profit
400,000 Gold + 1,050,000 Gold + 120,000 Gold + 1,000 Gold - 1,000 Gold + 5775 Gold= 1,575,775 Gold
Zap Wall Cumulative Cost = 8,821,200 Gold
8,821,200 Gold * 250 Walls = 2,205,300,000 Gold
2,205,300,000 Gold / 1,575,775 Gold = 1,405 Raids (Approximately)
240 Barbarians * 4 Barracks = 60 Barbarians Per Barrack
60 Barbarians / __ Minutes = 6 Barbarians / 2 Minutes
60 Barbarians = 20 Minutes
3 Minutes + 0.5 Minutes = 3.5 Minutes Per Battle
20 Minutes + (1404 Raids * 16.5 Minutes) + (1405 Raids * 3.5 Minutes) = 28,103.5 Minutes
28,103.5 Minutes / 60 Minutes = 468.4 Hours (Approximately)
468.4 Hours / 24 Hours = 19.5 Days
That's 19.5 Days of purely raiding, online all day, earning 1,575,775 Gold per Raid (Which is insane by the standards of the loot system today), not losing any Gold at all in anything other than search cost or wall expenses, finding a base with full collectors, storages, and Town Hall in Champion's League, using a full army of barbarians, and never getting attacked.
So, it's actually possible to farm zap walls in less than a month.







