Alright, let's work through 7641 times 1806 step by step
7641 × 1806 = 1806 × (7641)
+ 1806 × 1 resulting in 1806
+ 1806 × 40 producing 72240
+ 1806 × 600 that results in 1083600
+ 1806 × 7000 that is equal 12642000

= 13799646
