Alright, let's work through 6641 times 4227 step by step
6641 × 4227 = 4227 × (6641)
+ 4227 × 1 resulting in 4227
+ 4227 × 40 that is equal 169080
+ 4227 × 600 producing 2536200
+ 4227 × 6000 that results in 25362000

= 28071507
