Alright, let's work through 18409271 times 18918095 step by step
18409271 × 18918095 = 18918095 × (18409271)
+ 18918095 × 1 that is equal 18918095
+ 18918095 × 70 that is equal 1324266650
+ 18918095 × 200 yielding 3783619000
+ 18918095 × 9000 producing 170262855000
+ 18918095 × 00000 that is equal 0
+ 18918095 × 400000 giving us 7567238000000
+ 18918095 × 8000000 that equals 151344760000000
+ 18918095 × 10000000 that equals 189180950000000

= 348268337658745
