CREATE TABLE table_name_7 (grid INT, time VARCHAR, laps VARCHAR)

Can you tell me the sum of Grid that has the Time of +6.355, and the Laps larger than 23?
SELECT SUM(grid) FROM table_name_7 WHERE time = "+6.355" AND laps > 23
SELECT SUM("grid") FROM "table_name_7" WHERE "+6.355" = "time" AND "laps" > 23