Alright, let's work through 16248408 times 42667405 step by step
16248408 × 42667405 = 42667405 × (16248408)
+ 42667405 × 8 that results in 341339240
+ 42667405 × 00 which equals 0
+ 42667405 × 400 that results in 17066962000
+ 42667405 × 8000 that equals 341339240000
+ 42667405 × 40000 what gives us 1706696200000
+ 42667405 × 200000 that equals 8533481000000
+ 42667405 × 6000000 that results in 256004430000000
+ 42667405 × 10000000 that results in 426674050000000

= 693277404741240
