\[\boxed{\ \mathbf{977\ (977)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ 28,8\ :1,8 = 288\ :18 = 16\]
\[2)\ 12,88\ :4,6 = 1288\ :460 =\]
\[= 2,8\]
\[3)\ 81\ :2,25 = 8100\ :225 = 36\]
\[4)\ 9,6\ :0,04 = 960\ :4 = 240\]
\[5)\ 4,928\ :0,16 = 4928\ :160 =\]
\[= 30,8\]
\[6)\ \ 0,22274\ :0,43 =\]
\[= 22274\ :43000 = 0,518\]
\[7)\ 0,72\ :0,9 = 72\ :90 = 0,8\]
\[8)\ 0,014\ :0,56 = 14\ :560 =\]
\[= 0,025\]
\[9)\ 1\ :0,0025 = 10\ 000\ :25 =\]
\[= 40\]
\[10)\ 7,488\ :3,12 =\]
\[= 7488\ :3120 = 2,4\]
\[11)\ 0,1218\ :0,058 =\]
\[= 1218\ :580 = 2,1\]
\[12)\ 6,1244\ :0,061 =\]
\[= 61244\ :610 = 100,4\]
\[\boxed{\mathbf{977}\mathbf{.}\mathbf{\ }}\]
\[3410\ :55 = 62 - разность\ \]
\[искомого\ числа\ и\ числа\ 38.\]
\[62 + 38 = 100 - искомое\ \]
\[число.\]
\[Ответ:число\ 100.\]