Blogger asymco did a little calculating from last week's announcement numbers, and has hammered out a rough estimate of just how many of each iDevice are floating around the world today. According to Steve at last week's event, there are 120 million iDevices total in the world, and we already knew from SEC filings that 59.6 million of those were iPhones. The current number of iPads in the hands of customers around world is 3.2 million, which (with estimates for the past month on both of those devices added in), means that there are likely 45.2 million i