120:4,5

45,26:2,7

85,3:6,2

402:34

234:6,81

\(\left.\begin{array}{l}1\,2\,0\\ \,\,\,\,9\,0\\\hline\,\,\,\,3\,0\,0\\\,\,\,\,2\,7\,0\\\hline\,\,\,\,\,\,\,\,3\,0\end{array}\right|\!\!\!\;\!\!\begin{array}{l}\dfrac{\ \ 4,5\ \ }{\ \ 2\,6\ \ }\\\\\\\end{array}\) $\\$ Vậy `120:4,5=26` (dư `30`)$\\$$==================$$\\$\(\left.\begin{array}{l}4\,5,2\,6\\ 1\,8\,\,2\\\,\,\,\,2\,\,0\,6\\\quad\,\,\,1\,7\end{array}\right|\!\!\!\;\!\!\begin{array}{l}\dfrac{\ \ 2,7 \ \ }{\ \ 1\,6,7\ \ }\\\\\\\end{array}\) $\\$Vậy `45,26:2,7 =16,7` (dư `17`)$\\$$================$$\\$ \(\left.\begin{array}{l}8\,5,3\\ 6\,2\\\hline2\,3\,\,3\\1\,8\,\,6\\\hline\,\,\,\,4\,\,7\end{array}\right|\!\!\!\;\!\!\begin{array}{l}\dfrac{\ \ 6,2\ \ }{\ \ 1\,3\ \ }\\\\\\\end{array}\) $\\$ Vậy `85,3:6,2=13` (dư `47`)$\\$$==================$$\\$\(\left.\begin{array}{l}4\,0\,2\\ 3\,4\\\hline\,\,\,\,6\,2\\\,\,\,\,3\,4\\\hline\,\,\,\,2\,8\end{array}\right|\!\!\!\;\!\!\begin{array}{l}\dfrac{\ \ 3\,4\ \ }{\ \ 1\,1\ \ }\\\\\\\end{array}\) $\\$Vậy `402:34=11` (dư `28`)$\\$ $=================$$\\$\(\left.\begin{array}{l}2\,3\,4\\2\,0\,4\,3\\\hline \,\,\,\,2\,9\,7\,0\\\,\,\,\,2\,7\,2\,4\\\hline\quad\,\,2\,4\,6\end{array}\right|\!\!\!\;\!\!\begin{array}{l}\dfrac{\ \ 6,8\,1\ \ }{\ \ 3\,4\ \ }\\\\\\\end{array}\) $\\$Vậy `234:6,81=34` (dư `246`)