Max Coins Obtainable Per Month and Rank

[Conditions] - Source of coins is tanks only - No bonuses from Choppkins, etc. Originally, tanks yield 1 per hour (60 coins), so in 1 day (24 hours), that's 1440 coins. Therefore, assuming a month has 30 days, 1440 coins × 30 days = 43,200 coins. This means, based on the image and calculation, if you only get coins from tanks, your rank will be up to Gold. (This is where I started from, wanting to know this.) I've only received the S bonus from Choppkins for coins so far, so I'm not sure, but estimating from the S bonus, the Choppkin bonus for L is expected to add about 20-30% more. Therefore, reaching Platinum rank seems possible depending on the Choppkins bonus.