3G+ network traffic

[Zalu]

Hi Experts
My company wants me to study how many subscribers we can add to the existing 3G+ network. The initial design capacity was at 300,000 subscribers.
On busy hour the average generated traffic now is 67,912GB.
-So I calculated the BH kbps as : (generated traffic as kb)/(3,600)=234.09*power(2,20)*8/3600=545,466.78kbps
-then for each subscriber i calculated as: BH kbps/number of subscribers=545,466.78/300,000=1.82kbps/sub

the designed kbps/sub was 3kbps, and I know that we have already sold past 300,000 USIMs. And from my calculation, if I've correctly made that, you can see that 1.82 is less than 3 kbps. and this could happen by either low user activity than expected or too high number of USIMs sold.

Is my calculation wrong? if not how can i improve this value? and in order to sell more USIMS with adding a second carrier what should i consider?
help me out experts any suggestion is welcomed !

[firstmaxim]

I am getting 503 kbps/subscriber. Zalu, can you go through the calculations once more?

[Zalu]

I am getting 503 kbps/subscriber. Zalu, can you go through the calculations once more?

thank you firstmaxm, it was a copy paste error.
Other than that, do you think the calculation is correct?
I calculated the BH kbps/sub as BH kbps/no of sub, in this calculation; either low BH kbps or high numbers of subscribers could make the result small.
Based on your experience do you think 234.09kbps is small for 867 cells?

[RodrigoCarvalho]

I think your calculation is fine