Analysis: First bake four cakes on one side in the pot for four minutes, then take out two cakes, turn the remaining two cakes over and put two raw ones in. Four minutes later, the first two cakes are cooked, then take them out and bake them on the other side of the two cakes that were half baked before, then turn over the two cakes that were only half baked and bake them for four minutes. Six cards will be burned. Total *** 12 minutes.

Extended data:

This kind of problem belongs to pancake problem in mathematics, and the formula of pancake problem is:

Total time = number of cakes × 2÷ quantity per pot × time for baking each surface.

When the time is not an integer, approximate it with the method of entering one.

For example, when the number of cakes is 4, each pot is 3, and each side is baked for 2 minutes, according to the formula, 4×2÷3×2≈6 points.

When a pot can only bake two cakes: total time = time to bake one side × number of cakes.