Alright, let's work through 6672 times 681 step by step
6672 × 681 = 681 × (6672)
+ 681 × 2 that is equal 1362
+ 681 × 70 that equals 47670
+ 681 × 600 giving us 408600
+ 681 × 6000 resulting in 4086000

= 4543632
