Please choose the correct solution to the question: How do I staple pieces of paper together?

Solution1: Crookedly, place paper between the teeth of stapler and press down firmly with your hand on the stapler to make it staple.

Solution2: Straightly, place paper between the teeth of stapler and press down firmly with your hand on the stapler to make it staple.

Answer format: solution1/solution2
Answer: solution2