No problem, we've got 2106 and 5858 to multiply
2106 × 5858 = 5858 × (2106)
+ 5858 × 6 producing 35148
+ 5858 × 00 what gives us 0
+ 5858 × 100 producing 585800
+ 5858 × 2000 giving us 11716000

= 12336948
