Alright, let's work through 4005 times 7428 step by step
4005 × 7428 = 7428 × (4005)
+ 7428 × 5 which equals 37140
+ 7428 × 00 that results in 0
+ 7428 × 000 giving us 0
+ 7428 × 4000 resulting in 29712000

= 29749140
