Найди произведение:

1. а) (5/6)*(7/9) = 35/54 = 0.648. б) (11/28)*(7/33) = 77/924 = 0.083. в) (8/25)*(4/11) = 32/275 = 0.116. г) (3 5/7)*(1 1/13) = (26/7)*(14/13) = 364/91 = 4. д) (2 2/3)*6 = (8/3)*6 = 48/3 = 16.