Alright, let's work through 19815086 times 34462394 step by step
19815086 × 34462394 = 34462394 × (19815086)
+ 34462394 × 6 what gives us 206774364
+ 34462394 × 80 resulting in 2756991520
+ 34462394 × 000 what gives us 0
+ 34462394 × 5000 resulting in 172311970000
+ 34462394 × 10000 that results in 344623940000
+ 34462394 × 800000 that results in 27569915200000
+ 34462394 × 9000000 which equals 310161546000000
+ 34462394 × 10000000 yielding 344623940000000

= 682875300875884
