I could careless about how many likes I get, but this is way out of the normal.
I have small Instagram account, but I put lots into it. For me atleast C&C content always gets more likes (40-50), track & auto-x pans get 30-40. For a pan to get 200 & keep growing seems out the normal. It was posted at an off peak time too. I'm thinking I got an random algorithm on my side.