Alright, let's work through 6232 times 644 step by step
6232 × 644 = 644 × (6232)
+ 644 × 2 giving us 1288
+ 644 × 30 resulting in 19320
+ 644 × 200 giving us 128800
+ 644 × 6000 yielding 3864000

= 4013408
