We suggest that you use a reliable mining profitability calculator such as the one at https://btc.com/tools/mining-calculator
You may also download BTC.com’s app on your smartphone. This will show you how much a hash rate of 1 Th/s earns in 24 hours. For example the S7 has a hash rate of 4.73Th. You can use this to make your own calculations after considering your electricity costs to learn how much you can earn in one day or one month.