Alright, let's work through 5990 times 7799 step by step
5990 × 7799 = 7799 × (5990)
+ 7799 × 0 what gives us 0
+ 7799 × 90 what gives us 701910
+ 7799 × 900 what gives us 7019100
+ 7799 × 5000 resulting in 38995000

= 46716010
