CREATE TABLE table_35442 ("Name" TEXT, "GP-GS" TEXT, "Effic" FLOAT, "Att-Cmp-Int" TEXT, "Avg/G" FLOAT)

What is the sum avg/g with an effic of 858.4?
SELECT SUM("Avg/G") FROM table_35442 WHERE "Effic" = '858.4'
SELECT SUM("Avg/G") FROM "table_35442" WHERE "Effic" = '858.4'