Excel: enter value of column C into the middle of value of column B

If my L8 cell has TEST and my L9 has

ABCDEFG</div>RED

and I am trying to get

ABCDEFGTEST</div>RED

as a result I am using:

=CONCATENATE(LEFT(L9,SEARCH("G</div>",L9))&L8&RIGHT(L9,SEARCH("</div>",L9)))

But my actual result looks like:

ABCDEFGTEST/div>RED

How do i fix this? so, I dont lose the < on my end dig tag?

Edit: rewrote with simplified example to hopefully be more clear

Edit2: concatenate example