1/2=(1 ∙5)/(2 ∙5 )=5/10=0,5;
5/8=(5 ∙125)/(8 ∙125)=625/1000=0,625
19/25=(19 ∙4)/(25 ∙4)=76/100=0,76
19/8=(19 ∙125)/(8 ∙125)=2375/1000=2,375
47/200=(47 ∙5)/(200 ∙5)=235/1000=0,235
