Alright, let's work through 7407 times 2405 step by step
7407 × 2405 = 2405 × (7407)
+ 2405 × 7 resulting in 16835
+ 2405 × 00 which equals 0
+ 2405 × 400 what gives us 962000
+ 2405 × 7000 which equals 16835000

= 17813835
