No problem, we've got 42138363 and 8142457 to multiply
42138363 × 8142457 = 8142457 × (42138363)
+ 8142457 × 3 giving us 24427371
+ 8142457 × 60 which equals 488547420
+ 8142457 × 300 yielding 2442737100
+ 8142457 × 8000 yielding 65139656000
+ 8142457 × 30000 what gives us 244273710000
+ 8142457 × 100000 that is equal 814245700000
+ 8142457 × 2000000 resulting in 16284914000000
+ 8142457 × 40000000 what gives us 325698280000000

= 343109808777891
