Alright, let's work through 2378 times 5851 step by step
2378 × 5851 = 5851 × (2378)
+ 5851 × 8 giving us 46808
+ 5851 × 70 what gives us 409570
+ 5851 × 300 that equals 1755300
+ 5851 × 2000 what gives us 11702000

= 13913678
