# How do you simplify 0.025 div 0.04?

To begin with you may read this as $= \frac{0.025}{0.040}$
Now multiply by $1$ disguised as $\frac{1000}{1000}$
$= \frac{0.025}{0.040} \times \frac{1000}{1000} = \frac{25}{40} = \frac{\cancel{5} \times 5}{\cancel{5} \times 8} = \frac{5}{8}$