Na subscript 2SO subscript 4 + CaCl subscript 2 produces CaSO subscript 4 + NaCl

Please help me balance this equation and show your work

Na2SO4 + CaCl2 --> CaSO4 + NaCl

We need 2NaCl on the right to balance the Cl from CaCl2 on the left:

Na2SO4 + CaCl2 --> CaSO4 + 2NaCl

Now things balance. This one was easy, since both Ca and SO4 are -2.