Alright, let's work through 4105 times 10000 step by step
4105 × 10000 = 10000 × (4105)
+ 10000 × 5 that equals 50000
+ 10000 × 00 that results in 0
+ 10000 × 100 which equals 1000000
+ 10000 × 4000 resulting in 40000000

= 41050000
