Respuesta :

[tex]\frac{8.19}{4.20}= \frac{819}{420}[/tex]

Simplify by 7 and by 3 (or by 21 straight away).

[tex]\frac{819}{420}=\frac{819/7}{420/7}=\frac{117}{60}=\frac{117/3}{60/3}=\frac{39}{20}[/tex]

Your answer is [tex]\frac{39}{20}[/tex] or [tex]1.95[/tex].