Alright, let's work through 42729987 times 45779343 step by step
42729987 × 45779343 = 45779343 × (42729987)
+ 45779343 × 7 yielding 320455401
+ 45779343 × 80 what gives us 3662347440
+ 45779343 × 900 that is equal 41201408700
+ 45779343 × 9000 giving us 412014087000
+ 45779343 × 20000 that results in 915586860000
+ 45779343 × 700000 what gives us 32045540100000
+ 45779343 × 2000000 that is equal 91558686000000
+ 45779343 × 40000000 what gives us 1831173720000000

= 1956150731258541
