Alright, let's work through 9960 times 5791 step by step
9960 × 5791 = 5791 × (9960)
+ 5791 × 0 which equals 0
+ 5791 × 60 what gives us 347460
+ 5791 × 900 producing 5211900
+ 5791 × 9000 that equals 52119000

= 57678360
