$\mathrm{0,25}={\displaystyle \frac{1}{4}}0\{,\}25=\backslash dfrac\{1\}\{4\}$

Beispiele:

Erweitern mit 3: ${\displaystyle \frac{1}{4}}={\displaystyle \frac{1\cdot 3}{4\cdot 3}}={\displaystyle \frac{3}{12}}\backslash dfrac\{1\}\{4\}=\backslash dfrac\{1\backslash cdot\; 3\}\{4\backslash cdot\; 3\}=\backslash dfrac\{3\}\{12\}$

Erweitern mit 4: ${\displaystyle \frac{1}{4}}={\displaystyle \frac{1\cdot 4}{4\cdot 4}}={\displaystyle \frac{4}{16}}\backslash dfrac\{1\}\{4\}=\backslash dfrac\{1\backslash cdot\; 4\}\{4\backslash cdot\; 4\}=\backslash dfrac\{4\}\{16\}$