I need an Excel

We are a winery who has just moved to a new customer manage platform. We need to import our order history, which I've completed in the template required. For each order there can be several lines in excel with a new line for each product purchased on the one order. There is a column for order total, this order total is the same for each line of the order, and is required to be completed so we can run reports on the LTV of the customer in the future. I need this column filled, some orders have only one line while other can have 10+. Each row has a column for the following; an order number, # of units purchased, unit Price.