Alright, let's work through 5156 times 1520 step by step
5156 × 1520 = 1520 × (5156)
+ 1520 × 6 yielding 9120
+ 1520 × 50 giving us 76000
+ 1520 × 100 resulting in 152000
+ 1520 × 5000 producing 7600000

= 7837120
