The following table contains data on market advances and declines. Market Advances and Declines Advances Declines Day (in millions) (in millions) 1 907 721 2 655 987 3 733 790 4 520 969 5 498 1,020 6 980 720 7 1,003 625 8 904 715 9 851 735 10 767 767 a. Calculate cumulative breadth. (Enter your answers in millions. Negative amounts should be indicated by a minus sign.) Day Cumulative Breadth (in millions) 1 2 3 4 5 6 7 8 9 10