3=3/1; 8= 8/1; 2=4/2; 4=8/2;16= 48/3; 15=60/4; 10=50/5; 12=24/2; 7= 42/6; 100= 500/5; 20=60/3; 9=36/4
3=3/1; 8= 8/1; 2=4/2; 4=8/2;16= 48/3; 15=60/4; 10=50/5; 12=24/2; 7= 42/6; 100= 500/5; 20=60/3; 9=36/4