Alright, let's work through 42026644 times 21643488 step by step
42026644 × 21643488 = 21643488 × (42026644)
+ 21643488 × 4 which equals 86573952
+ 21643488 × 40 resulting in 865739520
+ 21643488 × 600 yielding 12986092800
+ 21643488 × 6000 yielding 129860928000
+ 21643488 × 20000 that equals 432869760000
+ 21643488 × 000000 that results in 0
+ 21643488 × 2000000 that is equal 43286976000000
+ 21643488 × 40000000 what gives us 865739520000000

= 909603165094272
