((32\57+27\38)*19\29+(25\26+48\65)*10\51+(74\75+49\50)*15\59)*\3\5

((32/57 + 27/38) * 19/29 + (25/26 + 48/65) * 10/51 + (74/75 + 49/50) * 15/59) * 3/5 == ((145/114) * 19/29 + (25/26 + 48/65) * 10/51 + (74/75 + 49/50) * 15/59) * 3/5 == ((145/114) * 19/29 + (17/10) * 10/51 + (74/75 + 49/50) * 15/59) * 3/5 == ((145/114) * 19/29 + (17/10) * 10/51 + (59/30) * 15/59) * 3/5 == (5/6 + (17/10) * 10/51 + (59/30) * 15/59) * 3/5 == (5/6 + 1/3 + (59/30) * 15/59) * 3/5 = (5/6 + 1/3 + 1/2) * 3/5 == (5/3) * 3/5 = 1