Alright, let's work through 8406 times 157 step by step
8406 × 157 = 157 × (8406)
+ 157 × 6 that equals 942
+ 157 × 00 which equals 0
+ 157 × 400 that is equal 62800
+ 157 × 8000 resulting in 1256000

= 1319742
