Alright, let's work through 5078 times 251 step by step
5078 × 251 = 251 × (5078)
+ 251 × 8 producing 2008
+ 251 × 70 that is equal 17570
+ 251 × 000 which equals 0
+ 251 × 5000 that is equal 1255000

= 1274578
