DeepSeek prompts

Solve this problem step by step and explain each step as if I am a secondary school student:
[paste problem]

At the end, give me a similar practice question with the answer hidden at the bottom.

This code should [what it should do] but instead [what happens]:
[paste code]

Explain what is wrong in simple words, give the fixed code, and tell me how to test that it works.

I am preparing for [exam, e.g. WAEC Biology]. Make revision notes on [topic]: key definitions, the 10 facts most likely to be tested, one diagram described in words, and 10 practice questions with answers at the end.