Alright, let's work through 42150769 times 81200689 step by step
42150769 × 81200689 = 81200689 × (42150769)
+ 81200689 × 9 that is equal 730806201
+ 81200689 × 60 producing 4872041340
+ 81200689 × 700 that is equal 56840482300
+ 81200689 × 0000 that equals 0
+ 81200689 × 50000 giving us 4060034450000
+ 81200689 × 100000 which equals 8120068900000
+ 81200689 × 2000000 producing 162401378000000
+ 81200689 × 40000000 that equals 3248027560000000

= 3422671484679841
