Alright, let's work through 4078 times 1878 step by step
4078 × 1878 = 1878 × (4078)
+ 1878 × 8 that is equal 15024
+ 1878 × 70 yielding 131460
+ 1878 × 000 what gives us 0
+ 1878 × 4000 that equals 7512000

= 7658484
