Alright, let's work through 2455 times 251 step by step
2455 × 251 = 251 × (2455)
+ 251 × 5 that results in 1255
+ 251 × 50 that equals 12550
+ 251 × 400 what gives us 100400
+ 251 × 2000 giving us 502000

= 616205
