Alright, let's work through 5115 times 8899 step by step
5115 × 8899 = 8899 × (5115)
+ 8899 × 5 which equals 44495
+ 8899 × 10 which equals 88990
+ 8899 × 100 what gives us 889900
+ 8899 × 5000 resulting in 44495000

= 45518385
