<! DOCTYPE html > < html lang = "en" > < head > < meta charset = "UTF-8" > < meta http-equiv = "X-UA-Compatible" content = "IE=edge" > < meta name = "viewport" content = "width=device-width, initial-scale=1.0" > < title > New Calculator </ title > < link rel = "stylesheet" href = "https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.4/font/bootstrap-icons.css" > < link rel = "stylesheet" href = "style.css" > < script src = "https://kit.fontawesome.com/a02bd9801f.js" crossorigin = "anonymous" ></ script > </ head > < body > < div class = "container" > < div class = "screen" > < textarea name = "text" id = "text" cols = "30" rows = "7" readonly...