2 câu trả lời
6458
x 8
--------
51,664
6787
x 3
-------
20,361
7890
x 6
-------
47,340
2341
x 9
-------
21,069
`#An`
6458
x 8
--------
51,664
6787
x 3
-------
20,361
7890
x 6
-------
47,340
2341
x 9
-------
21,069
`#An`