No problem, we've got 3498 and 6231 to multiply
3498 × 6231 = 6231 × (3498)
+ 6231 × 8 which equals 49848
+ 6231 × 90 what gives us 560790
+ 6231 × 400 yielding 2492400
+ 6231 × 3000 which equals 18693000

= 21796038
