CREATE TABLE table_78433 ("Driver" TEXT, "Constructor" TEXT, "Laps" FLOAT, "Time/Retired" TEXT, "Grid" FLOAT)

How many laps did Ricardo Zonta have?
SELECT SUM("Laps") FROM table_78433 WHERE "Driver" = 'ricardo zonta'
SELECT SUM("Laps") FROM "table_78433" WHERE "Driver" = 'ricardo zonta'