We will start thus:
First, express 0.000027 in fraction.
[tex]=\frac{27}{1000000}[/tex]Secondly, express 0.000009 in fraction:
[tex]=\frac{9}{1000000}[/tex]Now, we will bring both expressions together and simplify thus:
[tex]\begin{gathered} =0.000027\div0.000009 \\ =\frac{27}{1000000}\div\frac{9}{1000000} \end{gathered}[/tex]Solving further:
[tex]\begin{gathered} =\frac{27}{1000000}\times\frac{1000000}{9} \\ =\frac{27}{9} \\ =\frac{3}{1} \\ =3 \end{gathered}[/tex]