Want your customers to be able to select from different products and quantities in a shopping basket?
Calculator is equipped with Multiply and Divide to help make life easier. And now you can do calculations on Number questions, making a shopping basket so much easier to set up.
In this article, we’ll explain how to use these functions to create a checkout for a shopping cart that adds up the price based on the quantity of a single product that a customer selects.
Let customers choose how many items to buy
You can create a checkout that calculates the total price a customer needs to pay based on the quantity of a particular item they want. Check out this example we created using plane tickets, then read on to find out how we made it:
How to make it
1. Add a Picture Choice question that lists your items, each with a predefined price:

Note! Turn on Multiple selection in Question settings if you’d like people to choose more than one destination:

This won’t change the following calculations!
2. Add Calculator to this question and use the +Add function to assign the price of each product

Warning! Make sure to choose Price (not Score)! You’ll need to add a Payment question to the typeform for this to appear as an option.
3. Add a follow-up Number question asking the user to confirm the quantity. You can use Recall Information to show the answer to question 1 and to display the chosen destination in the question:
4. Now add Calculator to this follow-up question. Click the Calculator icon below your question, which opens up the Calculator menu:
5. Click Add a calculation. Now we can set it up to multiply the Price by the answer to this question:
6. Add a Payment question, and make sure you set the Price to 0 (zero):
And that’s it! Here’s what the final typeform should look like in the Create panel: