help please

Excel Cruisoline offers nightly dinner cruises departing from several cities on the eastem coast of the United States including Charleston, Baltimore, and Alexandria. Dinner cruise tickets sell for $80 per passenger. Excel Cruiseline's variable cost of providing the dinner is $40 per passenger, and the fixed cost of operating the vessels (depreciation, salaries, docking fees, and other exponses) is $240,000 per month. The company's relevant range extends to 19,000 monthly passengers. Compute the number of dinner cruise tickets Excel Cruiseline must sell to breakeven and the sales dollars needed to breakeven. Compute the number of dinner cruise tickets Excel Cruisesne must soll to breakeven Use the shertcut unit contribution margin approach: First, identify the formula, then compute the breakeven saiss in units. (Complote all input fields. For amounts with as 50 balance, make sure to enter " 0 " in the appropriate input field )