No problem, we've got 1679 and 7873 to multiply
1679 × 7873 = 7873 × (1679)
+ 7873 × 9 that results in 70857
+ 7873 × 70 that is equal 551110
+ 7873 × 600 what gives us 4723800
+ 7873 × 1000 what gives us 7873000

= 13218767
