Alright, let's work through 6396 times 4521 step by step
6396 × 4521 = 4521 × (6396)
+ 4521 × 6 that is equal 27126
+ 4521 × 90 that is equal 406890
+ 4521 × 300 yielding 1356300
+ 4521 × 6000 giving us 27126000

= 28916316
