Daily Revenue Calculation How?

On the Ergo platform they give you a calculation of Daily Revenue with an input of your hashrate. They also show three other pieces of information Current Erg Price, Current Block Reward, and Netwok hashrate. What is the formula for Daily Revenue in ERG?

the more the hashrate goes up, the more the difficulty goes up too and vice versa. so the more people there are the less you earn unless the ergo increases its price and therefore if you have ergo in wallet you can double your profitability

The ergo still needs to increase again, but there is a chance after ETH dies that ergo will be the next to be mass mined.

for calculation : https://2cryptocalc.com/ or https://whattomine.com/