3 416 x 2,7

\(\begin{array}{l} \times \,\,\,\underline {\begin{array}{*{20}{c}}{\,3\,\,416}\\{\,\,\,\,\,\,\,\,2,7}\end{array}} \\\underline {\begin{array}{*{20}{c}}{\,\,\,\,\,23\,\,912}\\{\,68\,\,32}\end{array}} \\\,\,\,\,9\,\,223,2\end{array}\)

15,3 x 0,65

\(\begin{array}{l}\underline { \times \begin{array}{*{20}{c}}{\,\,15,3}\\{\,\,\,0,65}\end{array}} \\\underline {\begin{array}{*{20}{c}}{\,\,\,\,\,\,\,\,765}\\{\,\,\,918}\end{array}} \\\,\,\,9,945\end{array}\)

966 : 56

\[\begin{array}{l}\,\,\,\left. \begin{array}{l}966\,\,\,\,\,\,\,\\406\,\,\,\,\end{array} \right|\begin{array}{*{20}{c}}{\underline {56\,\,\,\,\,\,\,} }\\{17,25}\end{array}\\\,\,\,\,\,\,140\,\,\,\,\,\,\,\,\\\,\,\,\,\,\,\,\,\,280\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,0\,\,\,\,\,\,\,\,\,\,\,\,\,\end{array}\]

26,88 : 3,5

\[\begin{array}{l}\,\,\,\left. \begin{array}{l}26\cancel{,}8,8\,\,\,\,\\\,\,\,\,2\,\,\,3\,\,\,8\,\,\,\,\end{array} \right|\begin{array}{*{20}{c}}{\underline {3\cancel{,}5\,\,\,\,\,\,\,} }\\{7,68\,\,}\end{array}\\\,\,\,\,\,\,\,\,\,\,\,\,\,2\,\,80\,\,\,\,\,\,\,\,\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,0\,\,\,\,\,\,\,\,\,\,\,\,\,\end{array}\]

Tính biểu thức 3/7 x 4/15