2
6
18
24
(52/7)
"7/52"
"28/7"
"7/28"
(659/1000)
(659/10000)
(659/100000)
(659/1000000)
(3/10)
(9/10)
(12/10)
(13/10)
2(4/3)
2(1/3)
2(3/2)
2(2/3)