Missing $0.01 on each sale

I am not noticed from first sales.

my commission is 50% but I am not receiving fully 50% on each sale.
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22x5 = 110 - 50% = 55 | missing $0.05

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Sale was $22 | 22-50% = $11 but its $10.99

can anyone explain me why ? whats ? happening.

Its due to rounding rules of number (amount).
This topic is discussed here: Envato is cheating me for $0.01 per sale