#1" mole"# of any substance consists of #6.022xx10^23# individual items of that substance. It has the property that #6.022xx10^23# individual #""^12C# atoms have a mass of #12.00##g# precisely. The mole is thus the link between the micro world of atoms and molecules to the macro world of grams and litres.
You specified a mole of eggs. There are thus #6.022xx10^23# eggses. How many dozen eggs is this quantity?