Alright, let's work through 90418839 times 38408984 step by step
90418839 × 38408984 = 38408984 × (90418839)
+ 38408984 × 9 giving us 345680856
+ 38408984 × 30 yielding 1152269520
+ 38408984 × 800 producing 30727187200
+ 38408984 × 8000 what gives us 307271872000
+ 38408984 × 10000 that results in 384089840000
+ 38408984 × 400000 that results in 15363593600000
+ 38408984 × 0000000 which equals 0
+ 38408984 × 90000000 that is equal 3456808560000000

= 3472895740449576
