How many atoms in 4.98 moles Al

I made some explain and i found them for you:

I think that, considering that a mole contains an Avogadro's number of elements, there should be 6.2 * an Avogadro's Number of atoms of Al. 6.2*6.022*1023=3.733*1024 atoms.

Chemistry 5.9a The Mole Concept.