97 : 12 = 8 (ост.1)12 * 7 = 8412 * 8 = 9612 * 9 = 10897 - 96 = 1---------------------------------60 : 52 = 1(ост.8)52 * 0 = 052 * 1 = 5252 * 2 = 10460 - 52 = 8-------------------------------------920 : 102 = 9 (ост.2)102 * 8 = 816102 * 9 = 918102 * 10 = 1020920 - 918 = 2