b)
`0\text{,}83:0\text{,}5=\frac{83}{100}:\frac{50}{100}=\frac{83}{100}\cdot\frac{100}{50}=\frac{83}{100}\cdot 2=\frac{166}{100}=1\text{,}66`

e)
`3\text{,}9:0\text{,}15=\frac{390}{100}:\frac{15}{100}=\frac{390}{100}\cdot\frac{100}{15}=\frac{390}{15}=26`

g)
`0\text{,}57:0\text{,}3=\frac{57}{100}:\frac{30}{100}=\frac{57}{100}\cdot\frac{100}{30}=\frac{57}{30}=1\text{,}9`

h)
`8\text{,}55:0\text{,}9=\frac{855}{100}:\frac{90}{100}=\frac{855}{100}\cdot\frac{100}{90}=\frac{855}{90}=9\text{,}5`

i)
`7\text{,}263:0\text{,}6=\frac{7263}{1000}:\frac{600}{1000}=\frac{7263}{1000}\cdot\frac{1000}{600}=\frac{7263}{600}=12\text{,}105`

j)
`4\text{,}41:1\text{,}2=\frac{441}{100}:\frac{120}{100}=\frac{441}{100}\cdot\frac{100}{120}=\frac{441}{120}=3\text{,}675`

k)
`1\text{,}023:0\text{,}75=\frac{1023}{1000}:\frac{750}{1000}=\frac{1023}{1000}\cdot\frac{1000}{750}=\frac{1023}{750}=1\text{,}364`

l)
`14\text{,}4:1\text{,}2=\frac{144}{10}:\frac{12}{10}=\frac{144}{10}\cdot\frac{10}{12}=\frac{144}{12}=12`