user: ### NOW ANSWER:
Question: Which Avg/G has a Gain of 1839?
Columns: ['Name', 'Gain', 'Loss', 'Long', 'Avg/G']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Lamark Brown', 458.0, 46.0, 28.0, 45.8]
SQL:

assistant: SELECT SUM("Avg/G") FROM "Table" WHERE "Gain" = 1839.0;