Great Cruiseline offers nightly dinner cruises departing from several cities on the East Coast of the United States including Charleston, Baltimore, and Alexandria. Dinner cruise tickets sell for $$50$ per passenger. Great Cruiseline's variable cost of providing the dinner is $$20$ per passenger, and the fixed cost of operating the vessels $($depreciation$,$ salaries, docking fees, and other expenses$)$ is $$270,000$ per month. The company's relevant range extends to $20,000$ monthly passengers.

Compute the number of dinner cruise tickets Great Cruiseline must sell to break even and the sales dollars needed to break even.

Compute the number of dinner cruise tickets Great Cruiseline must sell to break even. Use the shortcut unit contribution margin approach.

First, identify the formula, then compute the breakeven sales in units. $($Complete all input fields. For amounts with a $$0$ balance, make sure to enter $"0"$ in the appropriate input field.$)$

$\backslash$table$[[(+)+,=$ Breakeven units$],[(1)+,=1$