let steps = “”; const currencySymbol = “$”, fixedCurrency = “USD”; function calculateTotal(){ steps=””; const price=parseFloat(document.getElementById(“itemPrice”).value); const quantity=parseInt(document.getElementById(“quantity”).value); const discount=parseFloat(document.getElementById(“discount”).value)/100; const taxRate=parseFloat(document.getElementById(“taxRate”).value)/100; if(isNaN(price)||isNaN(quantity)||isNaN(discount)||isNaN(taxRate)||price<=0||quantity<=0){ alert("Please enter valid positive values for all fields."); return; } const discountedPrice = price * (1 – discount); const subtotal = discountedPrice * quantity; const taxAmount = subtotal * taxRate; const totalAmount = subtotal + taxAmount; document.getElementById("totalAmount").value = formatCurrency(totalAmount); steps += `Inputs:
Item Price: ${formatCurrency(price)}
Quantity: ${quantity}
Discount: ${(discount*100).toFixed(1)}%
Tax Rate: ${(taxRate*100).toFixed(1)}%

`; steps += `Formulas:
Discounted Price = Price × (1 – Discount%)
Subtotal = Discounted Price × Quantity
Tax Amount = Subtotal × Tax Rate
Total Amount = Subtotal + Tax Amount

`; steps += `Results:
Total Amount: ${formatCurrency(totalAmount)}
`; if(document.getElementById(“calculationSteps”).style.display===”block”){ document.getElementById(“calculationSteps”).innerHTML = steps; } } function resetCalculator(){ document.querySelectorAll(“#calculator input”).forEach(el=>el.value=””); steps=””; document.getElementById(“calculationSteps”).innerHTML=”

Not calculated yet.

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

Not calculated yet.

“; }else{s.style.display=”none”;a.style.transform=”rotate(0deg)”;} } function formatCurrency(n){return currencySymbol+n.toFixed(2)+” “+fixedCurrency;}