Alright, let's work through 12642797 times 42237800 step by step
12642797 × 42237800 = 42237800 × (12642797)
+ 42237800 × 7 what gives us 295664600
+ 42237800 × 90 producing 3801402000
+ 42237800 × 700 that is equal 29566460000
+ 42237800 × 2000 what gives us 84475600000
+ 42237800 × 40000 resulting in 1689512000000
+ 42237800 × 600000 producing 25342680000000
+ 42237800 × 2000000 that results in 84475600000000
+ 42237800 × 10000000 that is equal 422378000000000

= 534003931126600
