Alright, let's work through 6429 times 6350 step by step
6429 × 6350 = 6350 × (6429)
+ 6350 × 9 giving us 57150
+ 6350 × 20 what gives us 127000
+ 6350 × 400 what gives us 2540000
+ 6350 × 6000 that is equal 38100000

= 40824150
