The formula of pancake problem is: total time = number of pancakes × 2÷ number of pancakes per pot × time for baking each noodle. When the time is not an integer, the approximate value is obtained by the one-step method in.

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

2. When only two cakes are baked in one pot: total time = time for baking one side × number of sheets.

3. When the number of cakes is odd, the scheme is as follows: the first and second cakes are branded on the front, the second and third cakes are branded on the back, the third and fourth cakes are branded on the front ... branded on the back of n- 1 and n-th, and finally branded on the back and front of the first and second cakes. The result is the same anyway.