user: ### NOW ANSWER:
Question: What is the sum avg/g with an effic of 858.4?
Columns: ['Name', 'GP-GS', 'Effic', 'Att-Cmp-Int', 'Avg/G']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Robert Marve', '11-11', 107.19, '213-116-13', 117.5]
SQL:

assistant: SELECT SUM("Avg/G") FROM "Table" WHERE "Effic" = 858.4;