Alright, let's work through 18408337 times 45428446 step by step
18408337 × 45428446 = 45428446 × (18408337)
+ 45428446 × 7 yielding 317999122
+ 45428446 × 30 resulting in 1362853380
+ 45428446 × 300 that results in 13628533800
+ 45428446 × 8000 what gives us 363427568000
+ 45428446 × 00000 producing 0
+ 45428446 × 400000 that results in 18171378400000
+ 45428446 × 8000000 giving us 363427568000000
+ 45428446 × 10000000 that equals 454284460000000

= 836262143354302
