Bài 1:
\(376\) x \(56\)\(=21065\)
\(6754\) x \(379=2559766\)
\(694256\) x \(342=237435552\)
\(3402\) x \(984=3347568\)
\(423\) x \(300=126900\)
\(654321\) x \(345=225740745\)
\(549\) x \(78=42822\)
\(2654\) x \(406=1077524\)
\(65431\) x \(324=21199644\)
\(1987\) x \(860=1708820\)
\(2744\) x \(193=529592\)
\(789425\) x \(316=249458300\)