If you change the subscripts it would change the reactants or products and then you would be solving a different formula, you would change what the chemical is
You need to do something like that your self so sorry can help.
1 mole K ------------- 6.02x10²³ atoms
1.83 moles K ------ ?? atoms
1.83 x (6.02x10²³) / 1 =
1.101x10²⁴ atoms of K
hope this helps!