Practice number formatting:
let price = 1234.567
// Format as currency
let formatted = "$" + price.toFixed(2)
console.log(formatted) // "$1234.57"
// Pad order numbers
let orderId = 42
let padded = String(orderId).padStart(6, "0")
console.log(padded) // "000042"
// Random price between $10 and $100
let randomPrice = (Math.random() * 90 + 10).toFixed(2)
console.log("$" + randomPrice)