CREATE TABLE table_45562 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Attendance" TEXT)

What is the total number of Week, when Opponent is At Cleveland Browns?
SELECT COUNT("Week") FROM table_45562 WHERE "Opponent" = 'at cleveland browns'
SELECT COUNT("Week") FROM "table_45562" WHERE "Opponent" = 'at cleveland browns'