Alright, let's work through 42121538 times 38277642 step by step
42121538 × 38277642 = 38277642 × (42121538)
+ 38277642 × 8 that is equal 306221136
+ 38277642 × 30 resulting in 1148329260
+ 38277642 × 500 that results in 19138821000
+ 38277642 × 1000 yielding 38277642000
+ 38277642 × 20000 producing 765552840000
+ 38277642 × 100000 yielding 3827764200000
+ 38277642 × 2000000 which equals 76555284000000
+ 38277642 × 40000000 which equals 1531105680000000

= 1612313152053396
