Can't get the HLOOKUP function to work properly

Here is my Excel file:
Lijsten_VanCamp_Dennis.xlsx



I have problems with the function HLOOKUP in sheet 2 and 3.

In column C worksheet #2 ("Oefening op zoeken in lijsten"), I need to add the description found in sheet 3, B2:E2 by using the function HLOOKUP.
In column E worksheet #2, I need to add the selling price (selling price = "inkoopprijs" (buying price) * "factor")

Here some translations to avoid confusion
Sheet 2
C3 = "Description"
E3 = "Selling price"

Sheet 3:
A1 = "Category number"
A2 = "Category description"
A3 = "Factor"

I manually adjusted the code a bit in column C, but that is not the correct way to do it.

I been trying all sorts of thing but I just don't get it to work. It's not a long code, but I've been looking too long at it that I am desperate for help. Thanks! :-)

Hi,

In C4 =HLOOKUP(B4,informatie,2,FALSE) - Copy down
In E4 =HLOOKUP(B4,informatie,3,FALSE)*D4 - Copy down

HTH
Steve