Apply aᵐ ÷ aⁿ = aᵐ⁻ⁿ with coefficients, e.g. 12a⁵ ÷ 4a² = 3a³, written as fractions where helpful, including two-letter quotients. Keep the larger index on top so results stay positive; zero and negative indices belong to the Number strand. Both tiers per A4. (A4)