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I was thinking about this for quite a while and decided to try it in addition to banking deposits made of stairs (if you dont know what stairs system for banking deposits is feel free to ask me) in 3 different currencies: russian rouble (the most higher % rates comparing to other currencies make it very profitable), us dollar (low % rates but high stability) and euro (low % rates, expensive value). So I made like 3-4 bets on a few local competitive teams and won like x3 more money I've put into...

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