Variable expenses are those expenses that track directly with sales. If sales stop they stop. These are expenses like supplies used to support in the making of your product or doing your service. Such things as shipping cost for raw materials for your product or service. If you have no sales then you're not going to be purchasing materials so your shipping cost for those materials will stop as well. As an example, if you have a lawn mowing business and there are no lawns to mow, then you wouldn't be buying gasoline to travel to your lawn mowing site. These kinds of things are variable expenses. If you're producing a product, it would include supplies used to produce that product like sand paper, glue, finishing materials, cutting tools, etc.
Let's say your average selling price for your service is 逽ሪ and you have one transaction per year per customer. Using that first years sales example we used above, you would calculate it this way. 造같 divided by 逽ሪ = 968 customers needed for the year. Now if your average transactions per customer are more than 1, then you would need fewer customers. As an example, let's say your average transaction per customers per year is 2Ǒ then 968 divided by 2Ǒ = 387 customers per year. Now let's say you estimate your conversation rate to be 3% of turning leads into paying customers with the advertising method you're going to use, how many leads would need to contact to get 387 customers? Simply divide 387 by 3% and you get 12꽭 leads you're going to need to contact.