Fractiile * adica : 315/320 ( simplifici prin 5 ) => 63/64
48/124 ( simplifici prin 2 ) => 24/62 ( inca o data prin 2 ) => 12/31
360/420 ( simplifici prin 2 ) => 180/210 ( inca o data prin 2 ) => 90/105 ( acum simplifici prin 5 ) => 18/21
312/390 ( simplifici prin 2 ) => 156/195