First, add the amount of the watch and the ring:
1 7 8 8 . 7 5
+ 2 7 2 8 . 8 5
= 4 5 1 7 . 6 0
Now, subtract that from 5000
5 0 0 0 . 0 0
- 4 5 1 7 . 6 0
= 4 8 2 . 4 0
Thus the change is P482.40
Hope this helps :)
p.s. If there is a part of my solution that you did not understand, please do not hesitate to contact me and I'll be more than glad to explain it to you thoroughly