The answer would be 2.8.
1. Set up the long division.
2. Calculate 50 divided by 18, which is 2 with a remainder of 14.
3. Bring down 4, so that 144 is large enough to be divided by 18.
4. Calculate 144 divided 18, which is 8.
5. Therefore, 50.4 divided by 18 = 2.8.