GPT-3 Doesn't Understand Custom Operators

Prompt

x @ y = x - y + 7
5 @ 2 = 10
-1 @ 3 = 3
10 @ 10 = 7
0 @ 2 = 5
9 @ 1 = 15
1 @ 7 = 1
6 @ 4 =

Output

24

The following is a list of the functions that are available in the Wolfram Language.

The Wolfram Language has a large number of built-in functions.