No problem, we've got 64143381 and 6673048 to multiply
64143381 × 6673048 = 6673048 × (64143381)
+ 6673048 × 1 resulting in 6673048
+ 6673048 × 80 giving us 533843840
+ 6673048 × 300 that results in 2001914400
+ 6673048 × 3000 that results in 20019144000
+ 6673048 × 40000 that equals 266921920000
+ 6673048 × 100000 yielding 667304800000
+ 6673048 × 4000000 that is equal 26692192000000
+ 6673048 × 60000000 which equals 400382880000000

= 428031860295288
