Alice is planning to open up a sandwich shop. An estimate of her costs$/$revenues are as follows: average sales price per sandwich: $$13\mathrm{.}75$; yearly rent: $$18,000$; monthly fixed utility bill: $$900$; average cost of ingredients per sandwich: $$4\mathrm{.}63$; monthly labour bill $($fixed$)$: $$11,500$; miscellaneous fixed supplies$/$month: $$250$; misc. variable supplies: $$2\mathrm{.}48$ per sandwich.

How many sandwiches does she need to sell per month to break even?

$2,236$ units

$2,232$ units

$2,131$ units

$2166$ units