CREATE TABLE table_62420 ("Pick #" FLOAT, "Player" TEXT, "Nationality" TEXT, "Position" TEXT, "Team from" TEXT, "League from" TEXT)

Which Pick # has a League from of ontario hockey league, a Nationality of united states, and a Team from of brampton battalion?
SELECT COUNT("Pick #") FROM table_62420 WHERE "League from" = 'ontario hockey league' AND "Nationality" = 'united states' AND "Team from" = 'brampton battalion'
SELECT COUNT("Pick #") FROM "table_62420" WHERE "League from" = 'ontario hockey league' AND "Nationality" = 'united states' AND "Team from" = 'brampton battalion'