Alright, let's work through 1001 times 7136 step by step
1001 × 7136 = 7136 × (1001)
+ 7136 × 1 yielding 7136
+ 7136 × 00 yielding 0
+ 7136 × 000 resulting in 0
+ 7136 × 1000 producing 7136000

= 7143136
