Alright, let's work through 67456518 times 21669871 step by step
67456518 × 21669871 = 21669871 × (67456518)
+ 21669871 × 8 yielding 173358968
+ 21669871 × 10 that results in 216698710
+ 21669871 × 500 producing 10834935500
+ 21669871 × 6000 giving us 130019226000
+ 21669871 × 50000 what gives us 1083493550000
+ 21669871 × 400000 resulting in 8667948400000
+ 21669871 × 7000000 resulting in 151689097000000
+ 21669871 × 60000000 which equals 1300192260000000

= 1461774043169178
