Ука­жи­те номер под­черк­ну­то­го фраг­мен­та, в ко­то­ром до­пу­ще­на ошиб­ка.

Formula One is so massive (1), that on a race weekend (2) at the height of the season (3), more than 300 millions people (4) in 150 countries tune it.