Alright, let's work through 4105 times 899 step by step
4105 × 899 = 899 × (4105)
+ 899 × 5 resulting in 4495
+ 899 × 00 resulting in 0
+ 899 × 100 that is equal 89900
+ 899 × 4000 which equals 3596000

= 3690395
