I have a spreadsheet that I need to add numeric information from one cell,
into another cell on the same row, that has a text string.

For example, I need the numbers: 64001005 from cell A1 to be added in cell
c1 along with the text: productimages/ (with the forward slash)
Then I need to add a file extension (.jpg) after the numbers from cell A1.

So, C1 needs to = A1 + productimages/(cell a1+.jpg)
Final C1 looks like: productimages/64001005.jpg

Any help would be greatly appreciated.
Thanks!