Fraction

Note that $\dfrac13 = 0.333\dots$ and $\dfrac23 = 0.666\dots$.

Then $\dfrac1{300} = 0.00333\dots$ and $\dfrac1{150} = 0.00666\dots$.

$0.72666\dots + 0.02333\dots = 0.72 + 0.02 + 0.00666\dots + 0.00333\dots = 0.74 + \dfrac1{300} + \dfrac1{150}$

I believe you can continue here.