What is the molarity of a 2.0 liter solution containing 58 grams of nacl?

First, need to know the formula of Molarity. 
                     moles of solute
  Molarity =
                      liters of solution

Given 
    2.0 liter of solution 
    58 grams of NaCl

Base of my research the moles of 58 grams of NaCl is 0.750 moles

Solution

                    0.750 moles
Molarity =              = 0.375
                             2.0 L

The molarity of this solution is 0.375 
 

Adozen is 1221/12 = 1.751.75 x 12 = 21therefore, 1.75 is the answer.