please show the steps to calculate the DOL, DFL and DCL. please write out the steps

Given a net income of $50,000, sales of $2,000,000, variable costs of $25,000, fixed operating costs of $175,000, price per unit of $5.00, interest expense of $20,000 and EBIT of $1,800,000, calculate: a. DOL b. DFL C. DCL Driver