copy till last used row of a column and paste it into another column of another sheet

[yogi_himalayan]

Every week I get data with random number of rows and I need to rearrange those data in certain order so it can accommodate with our system.

I have attached spreadsheet and would appreciate your assistance with macro to address following issue

1. need to find last used row and copy column I on sheet("internal") and paste to A2 in sheet("Int-SendOut")
2. need to find last used row and copy column H on sheet ("Internal") and paste to B2 in sheet("Int-SendOut")
3. need to find last used row and copy column C on sheet("Internal") and paste to C2 in sheet(Int-Sendout")

I am wondering what would be vba code to achieve the result based on last used row.

Thank you very much in advance for your assistance.