How do I add leading zeroes in this example?

[Sampoline]

I want to take the original naming in the image below and turn it into the required naming format. This includes substituting "/" with "-" and then adding a leading zero to sequence number at the end of the number.

Using the 1st column, I used a simple Substitute formula to change the "/" to a "-" in the 2nd column. But I can't figure out how to add the leading zero like shown in the 3rd column. And then to make the substitution and leading zero addition work together in a single formula possibly?

 

[Zot]

Zot's formula doesn't substitute "/" for "-"

And the one you posted also does not either. I need to substitute the forward slash with the hyphen and also only add the leading zero to single-digit numbers.

I thought you will have that helper column already

 

[Sampoline]

I thought you will have that helper column already

Haha yeah I did initially. But was wondering if a formula could do it without the helper. Thanks for your solution too Zot. I'll keep this one as reference when I need to use it in conjunction with a helper column in place.