Minecraft bill with super compactor (Hypixel)?

So the following:

My cobble (quarry stone) Minion in Hypixel-skyblock produces 1 cobblestone (quarry stone) every 9 seconds.

I need a total of 7 stacks of Enchanted Cobblestone for the "Super Compactor"

(7 stacks of enchanted quarry stone)

(1 stack = 64 items)

(1 enchanted cobblestone = 2 stacks and 32 cobblestone)

So how long will it take until I have the Super Compactor if only the Minion is running?

According to my calculation it should take about 3 hours

9sec x 64 = 576

2.5 x 7 = 17.5

576 x 17.5 = 10 080

10 080: 60 = 168

168: 60 = 2.8

((2 * 64 + 32) * 64 * 7) * 9

Enter that into a calculator and you have the duration in seconds

I'm too lazy to do it myself

If you want to have it in hours you have to divide it by 3600 and if you want to have it in minutes by 60