How to find a basis of $\Bbb R(t)$ over $\Bbb R$?

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I am reading field theory.

I dont understand the following fact:

What will be a basis of $\mathbb{R}(t)=\{\frac{f(t)}{g(t)}:f(t),g(t)\in \Bbb R[t]\}$.

I know that $\Bbb R(t)$ is a field and hence a vector space too over $\Bbb R$.

Also a basis of $\Bbb R[t]$ is $\{1,t,t^2,\ldots ,t^n,\ldots\}$

But how to find a basis of $\Bbb R(t)$?