Alright, let's work through 42257214 times 3988453 step by step
42257214 × 3988453 = 3988453 × (42257214)
+ 3988453 × 4 which equals 15953812
+ 3988453 × 10 giving us 39884530
+ 3988453 × 200 that is equal 797690600
+ 3988453 × 7000 which equals 27919171000
+ 3988453 × 50000 which equals 199422650000
+ 3988453 × 200000 which equals 797690600000
+ 3988453 × 2000000 which equals 7976906000000
+ 3988453 × 40000000 giving us 159538120000000

= 168540911949942
