Alright, let's work through 40271803 times 10490642 step by step
40271803 × 10490642 = 10490642 × (40271803)
+ 10490642 × 3 producing 31471926
+ 10490642 × 00 which equals 0
+ 10490642 × 800 that is equal 8392513600
+ 10490642 × 1000 resulting in 10490642000
+ 10490642 × 70000 giving us 734344940000
+ 10490642 × 200000 that equals 2098128400000
+ 10490642 × 0000000 that results in 0
+ 10490642 × 40000000 that equals 419625680000000

= 422477067967526
