Confusing error message for relative coordinates with too high numbers

The bug

When you enter a too high relative number for a command the error message calls the sum of your position and the relative teleport value "the number you entered" instead of the relative value you entered.

How to reproduce

1. Go to a x coordinate other than 0
2. Use the following command

   /tp @p ~60000000.0 ~ ~
   

   → It says as number you entered the sum