(1/2+1/4+1/6+1/10+1/12+1/60)/(1+1/3+1/5+1/10+1/15+1/30)
=(30/60+15/60+10/60+6/60+5/60+1/60)/(1+10/30+6/30+3/30+2/30+1/30)
=67/104