b=48 => 3600:b=3600:48=75, 3600*b=3600*172800; b=24 => 3600:24=150, 3600*24=86400; b=15 => 3600:15=240, 3600*15=54000; b=50 => 3600:50=72, 3600*50=180000; b=5 => 3600:5=720, 3600*5=18000.
3600/48=75
3600/24=150
3600/15=240
3600/50=72
3600/5=720
3600*48=172800
3600*24=86400
3600*15=54000
3600*50=180000
3600*5=18000
b=48 => 3600:b=3600:48=75, 3600*b=3600*172800; b=24 => 3600:24=150, 3600*24=86400; b=15 => 3600:15=240, 3600*15=54000; b=50 => 3600:50=72, 3600*50=180000; b=5 => 3600:5=720, 3600*5=18000.
3600/48=75
3600/24=150
3600/15=240
3600/50=72
3600/5=720
3600*48=172800
3600*24=86400
3600*15=54000
3600*50=180000
3600*5=18000