42/17 * 11/21 * 34/33 =
(42 * 11 * 34)/(17 * 21 * 33) =
(2*21 * 11 * 2*17)/(17 * 21 * 3*11) =
(2 * 2)/(3) = 4/3 = 1 1/3;
42/17 * 11/21 * 34/33 =
(42 * 11 * 34)/(17 * 21 * 33) =
(2*21 * 11 * 2*17)/(17 * 21 * 3*11) =
(2 * 2)/(3) = 4/3 = 1 1/3;