Alright, let's work through 40390145 times 34380010 step by step
40390145 × 34380010 = 34380010 × (40390145)
+ 34380010 × 5 that results in 171900050
+ 34380010 × 40 that is equal 1375200400
+ 34380010 × 100 what gives us 3438001000
+ 34380010 × 0000 that is equal 0
+ 34380010 × 90000 what gives us 3094200900000
+ 34380010 × 300000 resulting in 10314003000000
+ 34380010 × 0000000 what gives us 0
+ 34380010 × 40000000 what gives us 1375200400000000

= 1388613589001450
