1. Ask directly: 'A laptop costs Rs 42,000 + 18% GST, with 5% discount on the base price. Final price?' Then ask again adding: 'Show each step, then the final answer.' Check with a calculator.
2. Break a task into stages: first ask for an outline of a training plan, approve it, then ask for each section.
3. Self-check: after an answer, ask 'Check your answer for errors and list any assumptions you made.'