No problem, we've got 6640 and 8186 to multiply
6640 × 8186 = 8186 × (6640)
+ 8186 × 0 which equals 0
+ 8186 × 40 that is equal 327440
+ 8186 × 600 giving us 4911600
+ 8186 × 6000 giving us 49116000

= 54355040
