нιιιι..... ввѕяѕѕѕѕѕѕ

Here I observe one thing about post income ... 

The CPM is 50 .... It's mean you earn 0.05 of one impression... 

And if 10 impression then your income goes to 0.5 ... And if 9 then .45 ...... 

But many of time I seen that not 0.45 or 0.5 ... It's 0.44 and 0.49 .... 

Why this happens ....