Alright, let's work through 7644 times 43 step by step
7644 × 43 = 43 × (7644)
+ 43 × 4 that is equal 172
+ 43 × 40 that equals 1720
+ 43 × 600 which equals 25800
+ 43 × 7000 resulting in 301000

= 328692
