$\mathrm{0,2}\cdot {\displaystyle \frac{1}{2}}+\mathrm{0,2}\cdot {\displaystyle \frac{1}{2}}={\displaystyle \frac{\mathrm{0,2}}{2}}+{\displaystyle \frac{\mathrm{0,2}}{2}}={\displaystyle \frac{\mathrm{0,4}}{2}}=\mathrm{0,2}0\{,\}2\backslash cdot\backslash dfrac\{1\}\{2\}+0\{,\}2\backslash cdot\backslash dfrac\{1\}\{2\}=\backslash dfrac\{0\{,\}2\}\{2\}+\backslash dfrac\{0\{,\}2\}\{2\}=\backslash dfrac\{0\{,\}4\}\{2\}=0\{,\}2$

Alternativer Lösungsweg:

$\mathrm{0,2}\cdot {\displaystyle \frac{1}{2}}+\mathrm{0,2}\cdot {\displaystyle \frac{1}{2}}\backslash \; 0\{,\}2\backslash cdot\backslash dfrac\{1\}\{2\}+0\{,\}2\backslash cdot\backslash dfrac\{1\}\{2\}\backslash \; \backslash$klammere$\mathrm{0,2}\backslash \; 0\{,\}2\backslash$ aus:

$\mathrm{0,2}\cdot ({\displaystyle \frac{1}{2}}+{\displaystyle \frac{1}{2}})=\mathrm{0,2}\cdot 1=\mathrm{0,2}\backslash \; \backslash \; 0\{,\}2\backslash cdot\backslash left(\backslash dfrac\{1\}\{2\}+\backslash dfrac\{1\}\{2\}\backslash right)=0\{,\}2\backslash cdot1=0\{,\}2$