In this tutorial, I show how to turn a prompt into an interactive profit calculator directly inside ChatGPT—with editable inputs, a discount slider, and results that update as you make changes. You’ll see how to: ✅ Structure your prompt for an interactive tool ✅ Specify the controls and calculations you need ✅ Check the numbers before relying on the results Watch the video, then try it with a task you regularly do in a spreadsheet. What would you build—a pricing calculator, budget planner, or something else? Prompt Used in the Video: Create a native interactive e-commerce profit calculator directly in this ChatGPT conversation, with editable inputs, a discount slider and a Reset button. Provide usable controls here, not just code or a static table. Default inputs: selling price $79.00; unit cost $30.00; shipping $6.00; payment fee 3% of discounted revenue; advertising cost $15.00 per sale; returns allowance 5% of discounted revenue; discount 0%. Discount slider: 0%–50% in 1-percentage-point steps. Recalculate when any input changes. Reset must restore ALL original defaults. Display revenue after discount, contribution profit per sale, contribution margin and the detailed cost breakdown. Calculate with full precision: revenue = price × (1 − discount/100). Profit = revenue − unit cost − shipping − advertising − revenue × payment fee/100 − revenue × returns allowance/100. Margin = profit/revenue × 100; show undefined when revenue is zero. STRICT FORMATTING: Every displayed monetary input and output must be USD with exactly TWO decimal places, including whole-dollar values, negative amounts, summaries and cost breakdowns. Apply the currency formatter to every visible monetary value; never display raw floating-point results. Show $79.00, $21.68 and $7.14, not $79, 7.144 or long decimals. Display contribution margin with two decimal places. Keep calculations at full precision and round only for display. Preserve this formatting after input changes and Reset. Check the calculated results: at 0% discount, revenue $79.00, profit $21.68, margin 27.44%; at 20%, revenue $63.20, profit $7.14, margin 11.30%. Calculate from the inputs; do not hard-code these outputs. Label the calculator as a planning estimate excluding tax and overhead.