Alright, let's work through 6398 times 1128 step by step
6398 × 1128 = 1128 × (6398)
+ 1128 × 8 that is equal 9024
+ 1128 × 90 resulting in 101520
+ 1128 × 300 resulting in 338400
+ 1128 × 6000 producing 6768000

= 7216944
