\[\boxed{\ \mathbf{422\ (422)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ 13 \cdot 2a = 26a\]
\[2)\ 9x \cdot 8 = 72x\]
\[3)\ 23 \cdot 4b = 92b\]
\[4)\ 28 \cdot y \cdot 5 = 140y\]
\[5)\ 6a \cdot 8b = 48ab\]
\[6)\ 11x \cdot 14y = 154xy\]
\[7)\ 27m \cdot 3n = 81mn\]
\[8)\ 4a \cdot 8b \cdot 3 \cdot c = 96abc\]
\[9)\ 12x \cdot 3y \cdot 5z = 180xyz\]
\[\boxed{\mathbf{422}.\ }\]
\[1)\ 418 \cdot 46 = 19\ 228\]
\[2)\ 270 \cdot 3000 = 810\ 000\]