Alright, let's work through 38637155 times 9834579 step by step
38637155 × 9834579 = 9834579 × (38637155)
+ 9834579 × 5 what gives us 49172895
+ 9834579 × 50 producing 491728950
+ 9834579 × 100 what gives us 983457900
+ 9834579 × 7000 that is equal 68842053000
+ 9834579 × 30000 giving us 295037370000
+ 9834579 × 600000 that is equal 5900747400000
+ 9834579 × 8000000 that equals 78676632000000
+ 9834579 × 30000000 yielding 295037370000000

= 379980153182745
