Alright, let's work through 7428 times 4003 step by step
7428 × 4003 = 4003 × (7428)
+ 4003 × 8 giving us 32024
+ 4003 × 20 resulting in 80060
+ 4003 × 400 that results in 1601200
+ 4003 × 7000 giving us 28021000

= 29734284
