A manufacturing firm's Income Statement shows Cost of Sales of $50,000, Administrative Expenses of $20,000, Rental Expenses of $5,000, Interest Revenue of $20,000, Interest Expense of $15,000, and Net Income after Taxes of $60,000. Assuming there are no other items to be considered and that the Income Taxes are 25% of Net Income Before Taxes, what is the Sales Revenue?

Hint: Please write down a representative income statement (you can refer to Walmart income statement), start from the bottom (i.e., net income after taxes), and work your way up in the income statement.