Extract rows from one file that matches rows in a reference file and finally export result

Basically:
I have 25000 articles with a inventory value in one file
I have 1700 articlenumbers in a second reference file.
I want to match and find these reference articles and retrieve its inventory value from the first file.


Data-file

Article Number	Value
54	3
985	5
49000	9
4387	13
3678	1
...	...
Article 25000	87

Reference-file

Article Number

985

54

4387

Result-file:

Article Number	Value
985	5
54	3
4387	13

I dont know a hole lot about excel but after a bunch of searching I found something called VLOOKUP.. is this what Im looking for?
VLOOKUP(Data-file, Column A ; Reference-file, Column A)

I hope this is not one of those standard-basic-basic questions that is asked and answered all the time but I have really been looking around for a solution.
Coolest option would be an online tool where I could just choose both files and get a third
Tnx in advance!

Thank you!

Sorry for a late reply, Ive been on the road.

Ive been testing around but cant get it to work

Attached are the two files:
- datafile with 25000 rows
- result.xls with about 2000 rows

If someone would care to have a look the Vloopkup code should be placed in B1 (and then copied down) in file result.xls