53:7= 36:8= 47:15= 89:8=
53:7= 7 4ост.
53:7=7 4/7 36:8=4 4/8=4 1/2 47:15=3 2/15 89:8=11 1/8
53:7=7целых 4/7 36:8=4ц 4/8= 4ц 1/2 47:15= 3ц 2/15 89:8= 11ц 1/8