UPDATE: During the iPad launch event, Steve Job said Apple has sold over 75 million iPhone and iPod touch devices. Boom.

ORIGINAL: Could Apple's iPhone have moved over 40 million units, and the iPod touch almost 30 million yet, for a combined platform total hurtling towards 70 million?

We don't know, but we're opening the iPhone calculator app in an effort to find out.

Let's start with the last "official" tally. At the Apple "It's only rock and roll, but we like it" Music Event in Sept. 2009, Steve Jobs reported 30 million iPhones sold, and 20 million iPod touches for a platform total of 50 million.

A month later, during the Q4 2009 conference call, Apple reported 7.4 million iPhones sold, with iPod touch sales not broken out but said to be up 100% year-to-year.

Skip ahead to yesterday's Q1 2010 conference call, and Apple reported 8.7 million iPhones sold, and iPod touch up 55%.

Adding up the iPhone totals starts off easily enough: 30 + Q1 8.7 = 38.7 million. However, we don't know how many of the 7.4 million sold in Q4 were included in the September event numbers. (The quarter ended in September, but likely not the reporting). A quarter being 3 months, we'll make the colossally inaccurate leap of assuming 2/3 were counted, leaving 2.5 million to be added to the pot. So that makes 41.1 million iPhones on the market. (If Gene Munster's figures about 40% of those being on AT&T, then that makes 16.5 million in the US).

iPod touch is harder math, given the lack of breakdown. We could play it safe and keep the 3:2 ratio from October going, which would mean 27.4 million iPod touches, for a platform total of 68.5 million, but again, that's just a crazy bag of maybe.

Anyone have any better figures (or just better at math?)