Alright, let's work through 6441 times 6402 step by step
6441 × 6402 = 6402 × (6441)
+ 6402 × 1 which equals 6402
+ 6402 × 40 resulting in 256080
+ 6402 × 400 producing 2560800
+ 6402 × 6000 that is equal 38412000

= 41235282
