No problem, we've got 6121 and 3105 to multiply
6121 × 3105 = 3105 × (6121)
+ 3105 × 1 resulting in 3105
+ 3105 × 20 giving us 62100
+ 3105 × 100 that results in 310500
+ 3105 × 6000 which equals 18630000

= 19005705
