Alright, let's work through 9878 times 5835 step by step
9878 × 5835 = 5835 × (9878)
+ 5835 × 8 that results in 46680
+ 5835 × 70 that results in 408450
+ 5835 × 800 that results in 4668000
+ 5835 × 9000 what gives us 52515000

= 57638130
