1. The problem asks us to find how many baseball cards are in each stack when 527 cards are divided evenly into 17 stacks. 2. To solve this, we use division: divide the total number of cards by the number of stacks. 3. Write the division as $$\frac{527}{17}$$. 4. Perform the division: 17 goes into 527 how many times? 5. Calculate: $$17 \times 31 = 527$$, so 17 fits exactly 31 times into 527. 6. Therefore, each stack has 31 baseball cards. **Final answer:** 31 baseball cards in each stack.