Alright, let's work through 5120 times 7768 step by step
5120 × 7768 = 7768 × (5120)
+ 7768 × 0 that equals 0
+ 7768 × 20 what gives us 155360
+ 7768 × 100 giving us 776800
+ 7768 × 5000 producing 38840000

= 39772160
