No problem, we've got 8131 and 6664 to multiply
8131 × 6664 = 6664 × (8131)
+ 6664 × 1 producing 6664
+ 6664 × 30 giving us 199920
+ 6664 × 100 which equals 666400
+ 6664 × 8000 what gives us 53312000

= 54184984
