What would you do if you have half a million followers on Instagram?

Hi Hackers.
Assume yourself in a situation here.
Let's say you have a around 500K followers
on Instagram. What would be your strategy to convert them to your customers? Ofcourse by bringing value to them and there's a reason they are following you on Instagram (You're already brining them value).

You're a solo founder and don't have a team, no dev friends :P