let calculationSteps = “”; function calculateBusinessFinancials(){ calculationSteps = “”; const revenue = parseFloat(document.getElementById(“revenue”).value); const costOfGoodsSold = parseFloat(document.getElementById(“costOfGoodsSold”).value); const operatingExpenses = parseFloat(document.getElementById(“operatingExpenses”).value); const investment = parseFloat(document.getElementById(“investment”).value); if(isNaN(revenue) || isNaN(costOfGoodsSold) || isNaN(operatingExpenses) || isNaN(investment) || revenue <= 0){ alert("Please enter valid positive values for all fields."); return; } const netProfit = revenue – costOfGoodsSold – operatingExpenses; const roi = (netProfit / investment) * 100; document.getElementById("netProfit").value = formatCurrency(netProfit); document.getElementById("roi").value = roi.toFixed(2); calculationSteps += `Inputs:
Revenue: ${formatCurrency(revenue)}
Cost of Goods Sold: ${formatCurrency(costOfGoodsSold)}
Operating Expenses: ${formatCurrency(operatingExpenses)}
Investment: ${formatCurrency(investment)}

`; calculationSteps += `Formulas:
Net Profit = Revenue – Cost of Goods Sold – Operating Expenses
ROI = (Net Profit / Investment) × 100

`; calculationSteps += `Results:
Net Profit: ${formatCurrency(netProfit)}
ROI: ${roi.toFixed(2)}%
`; if(document.getElementById(“calculationSteps”).style.display === “block”){ document.getElementById(“calculationSteps”).innerHTML = calculationSteps; } } function resetBusinessFinancials(){ document.querySelectorAll(“#calculator input”).forEach(el => el.value = “”); calculationSteps = “”; document.getElementById(“calculationSteps”).innerHTML = “

Not calculated yet.

“; } function toggleCalculationSteps(){ const stepsDiv = document.getElementById(“calculationSteps”); const arrow = document.getElementById(“toggleArrow”); if(stepsDiv.style.display === “none” || stepsDiv.style.display === “”){ stepsDiv.style.display = “block”; arrow.style.transform = “rotate(180deg)”; stepsDiv.innerHTML = calculationSteps || “

Not calculated yet.

“; } else { stepsDiv.style.display = “none”; arrow.style.transform = “rotate(0deg)”; } } function formatCurrency(amount){ return “$” + amount.toFixed(2); }