Alright, let's work through 1644 times 8336 step by step
1644 × 8336 = 8336 × (1644)
+ 8336 × 4 that is equal 33344
+ 8336 × 40 that equals 333440
+ 8336 × 600 which equals 5001600
+ 8336 × 1000 that results in 8336000

= 13704384
