I have a rush job and I cannot for the life of me figure out how to get this to work.
Here's the deal:
User selects one (select_one) calculation type for volume from a list of 6. For our example let's just say:
1. Times 10
2. Times 20
3. Times 30
4. Times 40
5. Times 50
6. Times 60
Next ... They are prompted to enter a volume. Let's say they enter 3
Let's say I chose option 4 in the select_one area above. So with my input of 3 they calculated value would be 120 (That's 40 X 3). So what I need to know is how I can do a calculate on the fly to look at their select_one choice for the calculation type for volume and then multiple it by the number entered. Storing that number that's been calculated in a single field and displaying it for the user.