Alright, let's work through 4105 times 9960 step by step
4105 × 9960 = 9960 × (4105)
+ 9960 × 5 that equals 49800
+ 9960 × 00 what gives us 0
+ 9960 × 100 which equals 996000
+ 9960 × 4000 that results in 39840000

= 40885800
