Atom conversion , please explain step by step!

Question

How many atoms are in 1.14 mol SO3? 

Answer 1

First, find the number of molecules of SO₃ by multiplying the number of moles by Avogadro's number. Then multiply the number of molecules by the number of atoms in the molecule.

4 x (6.02 x 10²³) x 1.14 = ?