Alright, let's work through 1868344 times 80396920 step by step
1868344 × 80396920 = 80396920 × (1868344)
+ 80396920 × 4 what gives us 321587680
+ 80396920 × 40 giving us 3215876800
+ 80396920 × 300 that is equal 24119076000
+ 80396920 × 8000 which equals 643175360000
+ 80396920 × 60000 yielding 4823815200000
+ 80396920 × 800000 what gives us 64317536000000
+ 80396920 × 1000000 that results in 80396920000000

= 150209103100480
