List the three main steps of aerobic cellular respiration. Which of these steps yields (by far) the most ATP?

Question

Here are two:

Step One: Glucose enters the cell (insulin) and is split into 2 smaller 3 Carbon atoms called pyruvate. Total yield - 2 ATP

Step Two: Pyruvate goes to mitochondria and processed in the Krebs Cycle. Yield = 24 ATP.