Here's an online calculator/converter that will convert from scientific to decimal notation.
http://www.easysurf.cc/scintd.htm

Using the second converter, it shows that 2e-8 converts to .00000002. Using my shortcut, imagine a decimal point where the "e" is, then move the decimal point the number of positions after the "e." Since that number is a negative 8, move the decimal point eight places to the left. If it was 2e+8, you would have moved the decimal 8 places to the right, giving you 200,000,000. Hopefully that makes sense.

Mine on. Heeeeere blocky block block. Drink more hooch. Eat more fancy meals.

I believe that the reason it took so long to get a block was because I was drinking cheap beer and eating pizza and leftovers. The day I splurged, we found a block.