Alright, let's work through 7878 times 8124 step by step
7878 × 8124 = 8124 × (7878)
+ 8124 × 8 which equals 64992
+ 8124 × 70 that results in 568680
+ 8124 × 800 which equals 6499200
+ 8124 × 7000 that results in 56868000

= 64000872
