Alright, let's work through 3878 times 1974 step by step
3878 × 1974 = 1974 × (3878)
+ 1974 × 8 resulting in 15792
+ 1974 × 70 giving us 138180
+ 1974 × 800 what gives us 1579200
+ 1974 × 3000 producing 5922000

= 7655172
