Alright, let's work through 5515 times 991 step by step
5515 × 991 = 991 × (5515)
+ 991 × 5 what gives us 4955
+ 991 × 10 giving us 9910
+ 991 × 500 that equals 495500
+ 991 × 5000 producing 4955000

= 5465365
