Alright, let's work through 4640 times 7655 step by step
4640 × 7655 = 7655 × (4640)
+ 7655 × 0 that equals 0
+ 7655 × 40 that results in 306200
+ 7655 × 600 that is equal 4593000
+ 7655 × 4000 that equals 30620000

= 35519200
