I was listening to the World Service this morning and heard the local Zimbabwean reporter putting things into context.
Official inflation rate: 11,000,000%
Unofficial inflation rate: 300,000,000%
In Harringay you go into a shop with your money in your handbag and come out with your goods in a trolley. In Zimbabwe, you go in with your money in a trolley and, if you're lucky, come out with your goods filling your handbag.
The price of goods in a supermarket is increasing from the time you enter a shop.
When you go to a bar for the evening, you pay for your drinks in advance at the start of the evening. When I started writing this article a bottle of beer in Zimbabwe cost Z$18, 398,465. As I finish it stands at Z$18,398,919.
Here's the counter I found to track this.