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His translator TLed 'dorobić' as 'earn some extra money', which in this case simply means 'add' (earning extra money isn't wrong translation though, but google translate doesn't support that meaning). So he wanted to suggest adding rank calculation and deleting K/D ratio.
dominikkk26: Nie używaj google translate, bo on nie potrafi dobrze tłumaczyć zdań (zwłaszcza, że po polsku też nie potrafisz pisać). Pisz na polskim forum zamiast tutaj.