Alright, let's work through 6642 times 9673 step by step
6642 × 9673 = 9673 × (6642)
+ 9673 × 2 that is equal 19346
+ 9673 × 40 producing 386920
+ 9673 × 600 giving us 5803800
+ 9673 × 6000 which equals 58038000

= 64248066
