36 ATP created through Cellular Respiration

If you are a biology study you should know the equation for cellular respiration is C6H12O6  + 6 O2  → 6 CO2  + 6 H2O + 36 ATP
Just because biology is super amusing and fun, let's count the ATP made in cellular respiration.

• 2 in glycolysis
• 2 in Krebs cycle
• 34 in the electron transport system

But wait that's a total of 38 ATP! But the cellular respiration equation can't be wrong, so where did the extra 2 ATP go?  If we can recall the ETC requires NADH to donate the first 2 electrons, and where do we get these electrons?  2 are from pyruvate oxidation, 6 are from the Krebs cycle, and the last 2 are from glycolysis.  However, we know that the ETC takes place in the mitochondria and 8 of the NADH are already in the mitochondria, except for the 2 NADH from  glycolysis which are still in the cytoplasm.  Thus, to transport the 2 NADH from the cytoplasm into the mitochondria 2 ATP are required.  Therefore, the net equation for cellular respiration still has a total of 36 ATP.