CREATE TABLE table_7061 ("Year" FLOAT, "Foundry" TEXT, "Diameter  ( mm ) " FLOAT, "Weight  ( kg ) " TEXT, "Nominal Tone" TEXT)

What is the sum total of all the years with a bell that weighed 857 kilograms?
SELECT SUM("Year") FROM table_7061 WHERE "Weight (kg)" = '857'
SELECT SUM("Year") FROM "table_7061" WHERE "Weight (kg)" = '857'