No problem, we've got 2135 and 6421 to multiply
2135 × 6421 = 6421 × (2135)
+ 6421 × 5 that results in 32105
+ 6421 × 30 that results in 192630
+ 6421 × 100 that is equal 642100
+ 6421 × 2000 yielding 12842000

= 13708835
