Alright, let's work through 4989 times 2015 step by step
4989 × 2015 = 2015 × (4989)
+ 2015 × 9 resulting in 18135
+ 2015 × 80 that results in 161200
+ 2015 × 900 that is equal 1813500
+ 2015 × 4000 that results in 8060000

= 10052835
