Alright, let's work through 8437147 times 54140105 step by step
8437147 × 54140105 = 54140105 × (8437147)
+ 54140105 × 7 that results in 378980735
+ 54140105 × 40 which equals 2165604200
+ 54140105 × 100 resulting in 5414010500
+ 54140105 × 7000 yielding 378980735000
+ 54140105 × 30000 producing 1624203150000
+ 54140105 × 400000 that is equal 21656042000000
+ 54140105 × 8000000 yielding 433120840000000

= 456788024480435
