4 8/23 * 1 29/40 = 100/23 * 69/40 = 6900/920 = 15/2 = 7 1/2
1 4/5 + 7 1/2 = 8 + 4/5 + 1/2 = 8 + 8/10 + 5/10 = 8 + 13/10 = 9 3/10
4 8/23 * 1 29/40 = 100/23 * 69/40 = 6900/920 = 15/2 = 7 1/2
1 4/5 + 7 1/2 = 8 + 4/5 + 1/2 = 8 + 8/10 + 5/10 = 8 + 13/10 = 9 3/10