I tested mining a few days ago and 500 000 hashes earned me 114 satoshis, so 1 million hashes should result in about 230 satoshis. However please note that this number may vary a lot from day to day depending on the value of Bitcoin and Monero. You will earn more satoshis when Monero's price increases in respect to Bitcoin and vice versa.
Hmm. Can you please explain me how does monero is connected with BTC? How they influence on each other?
The miner FreeBitco is using mines Monero, not Bitcoin. FreeBitco then sells the mined Monero for Bitcoin and pays you in BTC. That is why when the price of Monero rises in respect to Bicoin, you will receive more satoshis for your mining.
Here's an example:
Case 1: Monero's price is $100, BTC's is $5000, so you earn 0.02 BTC (2 mln satoshis) for each mined Monero
Case 2: Monero rises to $200 and BTC drops to $4000. You now earn 0.05 BTC (5 mln satoshis) for each mined Monero
Case 3: Monero drops to 60$ and BTC rised to $6000. In this case you earn 0.01 BTC (or 1 mln satoshis) for each mined Monero
As you can see from the example above the exchange rate of Monero to Bitcoin can greatly influence earnings from mining.