Ok so we are running two Antminer S9's
Here is how much one can expect to make at the moment.
Remember, the worth of mined bits will change over time,
who knows how much a bitcoin will be worth in a year.
Days to generate one block mining solo: 926.70 Day(s) (can vary greatly depending on your luck)
Days to generate one BTC: 74.14 Day(s) (can vary greatly depending on the current exchange rates)
Days to break even: 131.05 Day(s) (can vary greatly depending on the current exchange rates)