CREATE TABLE table_204_175 (id DECIMAL, "pos" TEXT, "no." DECIMAL, "driver" TEXT, "team" TEXT, "laps" DECIMAL, "time/retired" TEXT, "grid" DECIMAL, "laps led" DECIMAL, "points" DECIMAL)

how many people completed 200 laps ?
SELECT COUNT("driver") FROM table_204_175 WHERE "laps" = 200
SELECT COUNT("driver") FROM "table_204_175" WHERE "laps" = 200