# Simple Example

Days OF Order 30/ Days TO Order 15

In this example, 108 units sold in the past 30 days (**Qty Sold** column). Since it is based on a 30-day period, per day velocity is 3.6.

- **Deficit Supply 15** — Multiplying 3.6 by 15 = 54. Subtract available qty of 28 to get a Deficit 15 of 26. **((108/30) \* 15) – 28 = 26**
- **Deficit Supply 30** — Multiplying 3.6 by 30 = 108. Subtract available qty of 28 to get a Deficit 30 of 80 **((108/30) \* 30) – 28 = 80**
- **Deficit Supply 45** — Multiplying 3.6 by 45 = 162. Subtract available qty of 28 to get a Deficit 45 of 134. **((108/30) \* 45) – 28 = 134**
- **Same calculation for 60 and 90.**