First off, Methane's chemical formula is CH4. So CH4 is the same as Methane.
32.08 g of CH4
16.04 g/mol of CH4
16.04 g/mol is basically 1 molecule of CH4 is 16.04 g.
Since you're trying to find out how much 32.08 g of CH4 is in molecules, you have to divide 32.08 g with 16.04 g/mol.
The answer is 2 molecules. :)