CREATE TABLE table_51666 ("Driver" TEXT, "Constructor" TEXT, "Laps" FLOAT, "Time/Retired" TEXT, "Grid" FLOAT)

What is the number of the grid for mika h kkinen and more than 45 laps?
SELECT COUNT("Grid") FROM table_51666 WHERE "Driver" = 'mika häkkinen' AND "Laps" > '45'
SELECT COUNT("Grid") FROM "table_51666" WHERE "Driver" = 'mika häkkinen' AND "Laps" > '45'