Alright, let's work through 7640 times 4377 step by step
7640 × 4377 = 4377 × (7640)
+ 4377 × 0 producing 0
+ 4377 × 40 giving us 175080
+ 4377 × 600 that equals 2626200
+ 4377 × 7000 yielding 30639000

= 33440280
