we can convert any decimal to a fraction, by simply using as many zeros at the bottom as there are decimals, and losing the dot atop, now let's do so, notice we have 3 decimals, so we'll use 3 zeros.
[tex]\bf 0.\underline{145}\implies \cfrac{0145}{1\underline{000}}\implies \stackrel{simplified}{\cfrac{29}{200}}[/tex]
