Alright, let's work through 4237 times 1005 step by step
4237 × 1005 = 1005 × (4237)
+ 1005 × 7 which equals 7035
+ 1005 × 30 what gives us 30150
+ 1005 × 200 that equals 201000
+ 1005 × 4000 yielding 4020000

= 4258185
