No problem, we've got 6183 and 6861 to multiply
6183 × 6861 = 6861 × (6183)
+ 6861 × 3 which equals 20583
+ 6861 × 80 which equals 548880
+ 6861 × 100 what gives us 686100
+ 6861 × 6000 that results in 41166000

= 42421563
