3 * 5/15 * 24 = 1/24; 3 * 12/16 * 13 = 3 * 3/4 * 13 = 9/52; (105 * 48)/(6 * 7 * 25) = 24/5; (5 * 30 * 4)/(48 * 16 * 9) = 600/6912 = 100/1152 = 25/288; (25 * 10 * 28)/(49 * 15) = 7000/735 = 1000/105 = 200/21; (17 * 13 * 42)/(56 * 18) = 9282/1008 = 221/24.