Form field calculation
First of all, It is not clear to me whether I'm posting this question in the right forum.
I created an interactive fillable form, some fields should be filled by hand, calculations was done in Acrobat Pro to automatically displayed formula results.

Here is what is expected to happen in the red framed fields:
- QTY.: User will type-in the quantity being requested
- Requested date: User will type-in the request date (see #4 below)
- Unit Price: User to type-in Unit price
- Total Price: is an auto calculation. If "Request date" is 1st of June, then formula is as follows [ Qty x Unit Price ]. If the date is not 1st of June then formula should be as follows [ Qty x Unit Price / 2 ]
How can I make the Total Price to use If/Then formula, must this be scripted?

