Alright, let's work through 31990611 times 40138397 step by step
31990611 × 40138397 = 40138397 × (31990611)
+ 40138397 × 1 which equals 40138397
+ 40138397 × 10 which equals 401383970
+ 40138397 × 600 that results in 24083038200
+ 40138397 × 0000 what gives us 0
+ 40138397 × 90000 resulting in 3612455730000
+ 40138397 × 900000 giving us 36124557300000
+ 40138397 × 1000000 that equals 40138397000000
+ 40138397 × 30000000 that equals 1204151910000000

= 1284051844590567
