No problem, we've got 3162 and 6535 to multiply
3162 × 6535 = 6535 × (3162)
+ 6535 × 2 resulting in 13070
+ 6535 × 60 that is equal 392100
+ 6535 × 100 what gives us 653500
+ 6535 × 3000 what gives us 19605000

= 20663670
