Alright, let's work through 84084098 times 42779601 step by step
84084098 × 42779601 = 42779601 × (84084098)
+ 42779601 × 8 that is equal 342236808
+ 42779601 × 90 giving us 3850164090
+ 42779601 × 000 that is equal 0
+ 42779601 × 4000 that is equal 171118404000
+ 42779601 × 80000 that is equal 3422368080000
+ 42779601 × 000000 which equals 0
+ 42779601 × 4000000 which equals 171118404000000
+ 42779601 × 80000000 giving us 3422368080000000

= 3597084162884898
