1.\:\:long\:multiplication\:21\cdot4
2.\:\:long\:multiplication\:232\cdot3
3.\:\:long\:multiplication\:342\cdot2
4.\:\:long\:multiplication\:45\cdot3
5.\:\:long\:multiplication\:26\cdot8
6.\:\:long\:multiplication\:37\cdot9
7.\:\:long\:multiplication\:121\cdot5
8.\:\:long\:multiplication\:263\cdot4
9.\:\:long\:multiplication\:304\cdot6
10.\:\:long\:multiplication\:415\cdot6