And yes they always pay less. If they are paying 1cent less to each and every publisher of adsense. (May be about 1000000 people) They will earn $10000. Omg thats so big. They are cheating with us.
That's not miscalculation, it is bacause of the decimal point. Your earning might be $0.286+$0.017 = $0.303 So, it will show $0.29+$0.02=$0.30