(12*9)/(25*16)=(3*9)/(25*4)=27/100
(14*34)/(17*63)=(2*2)/(1*9)=4/9
(17*13)/(26*18)=(17*1)/(2*18)=17/36
(51*74)/(37*85)=(3*2)/(1*5)=9/5=1 1/5
(82*46)/(115*41)=(2*2)/(5*1)=4/5
(56*99)/(11*40)=(7*9)/(1*5)=63/5=12 3/5
(86*57)/(119*43)=(2*3)/(7*1)=6/7
(6*20*14)/(25*21*32)=(3*4*2)/(5*3*16)=(3*4*2)/(5*3*16)=(1*1*2)/(5*1*4)=
=(1*1*1)/(5*1*2)=1/10