var a = prompt(" Enter an Expression:", "9279/59"); document.write("
");
if (a.indexOf("+") > -1) {
    var b = a.split("+"), c = b[0] - 0, d = b[1] - 0;
    var e = Math.max(b[0].length + 1, b[1].length + 1, (c + d + "").length);
    var f = b[0], g = b[1], h = c + d + "", i = new Array(e), j = 0, k = "";
    while (f.length < h.length)
        f = "0" + f;
    while (g.length < h.length)
        g = "0" + g;
    for (j = 0; j < h.length; j++) {
        i[j] = h.charAt(j) - ((f.charAt(j) - 0) + (g.charAt(j) - 0)) % 10;
        k += (i[j] === 0) ? " " : i[j];
    }
    var r = mString(" ", e - k.length) + k + "\n" + mString("-", e) + "\n" + mString(" ", e - b[0].length) + c + "\n+" + mString(" ", e - b[1].length - 1) + d + "\n" + mString("-", e) + "\n" + mString(" ", e - (c + d + "").length) + (c + d) + "\n" + mString("-", e);
    var s = r.split("\n");
    for (var t = 0; t < s.length; t++)
        if (s[t].endsWith("-"))
            document.write(s[t].split("").join("-") + "\n");
        else
            document.write(s[t].split("").join(" ") + "\n");
} else if (a.indexOf("-") > -1) {
    var b = a.split("-"), c = b[0] - 0, d = b[1] - 0;
    if (c - d < 0) {
        var t;
        t = c;
        c = d;
        d = t;
        b = [c + "", d + ""];
    }
    var e = b[0].length + 1, f = b[0], g = b[1], h = c - d + "", i = new Array(e), j = 0, k = "";
    while (g.length < f.length)
        g = "0" + g;
    while (h.length < f.length)
        h = "0" + h;
    for (j = 0; j < f.length; j++) {
        i[j] = (h.charAt(j) - 0) + (g.charAt(j) - 0);
        k += (i[j] === 0 || i[j] === f.charAt(j) - 0) ? "   " : " " + (i[j] < 10 ? " " + i[j] : i[j]);
    }
    var r = " " + k + "\n" + mString("-", e) + "\n" + mString(" ", e - b[0].length) + b[0] + "\n-" + mString(" ", e - b[1].length - 1) + b[1] + "\n" + mString("-", e) + "\n" + mString(" ", e - (c - d + "").length) + (c - d) + "\n" + mString("-", e);
    var s = r.split("\n");
    document.write(s[0] + "\n");
    for (var t = 1; t < s.length; t++)
        if (s[t].endsWith("-"))
            document.write(s[t].split("").join("--") + "\n");
        else
            document.write(s[t].split("").join("  ") + "\n");
} else if (a.indexOf("*") > -1) {
    var b = a.split("*"), c = b[0] - 0, d = b[1] - 0, e = 0, f = [];
    f.push(c + "", "*" + d);
    for (var g = b[0].length - 1; g >= 0; g--)
        f.push(((b[0].charAt(g) - 0) * d) + mString(" ", b[0].length - 1 - g));
    f.push(c * d + "");
    for (var h = 0; h < f.length; h++)
        if (f[h].length > e)
            e = f[h].length;
    for (var i = 0; i < f.length; i++) {
        while (f[i].length < e)
            f[i] = " " + f[i];
        f[i] = f[i].split("").join(" ");
    }
    e = 2 * e - 1;
    f.push(mString("-", e));
    f.splice(2, 0, mString("-", e));
    f.splice(f.length - 2, 0, mString("-", e));
    document.write(f.join("\n"));
} else if (a.indexOf("/") > -1) {
    var b = a.split("/"), c = b[0] - 0, d = b[1] - 0;
    var e = Math.floor(c / d), f = c % d, g = b[1].length + 1, h = c, i = [], j = e + "";
    i.push(mString(" ", g) + e, mString(" ", g) + mString("-", b[0].length), d + "|" + c);
    for (var k = 0; k < j.length; k++) {
        var l = d * (j.charAt(k) - 0);
        i.push(mString(" ", g) + l, mString(" ", g) + mString("-", h.toString().length));
        var m = h - l * Math.pow(10, h.toString().length - l.toString().length);
        g += h.toString().length - m.toString().length;
        i.push(mString(" ", g) + m);
        h = m;
    }
    i.push(mString(" ", g) + mString("-", h.toString().length));
    var n = 0;
    for (var o = 0; o < i.length; o++)
        if (i[o].length > n)
            n = i[o].length;
    for (var p = 0; p < i.length; p++) {
        while (i[p].length < n)
            i[p] = i[p] + " ";
        i[p] = i[p].split("").join(" ").split("- ").join("--");
    }
    document.write(i.join("\n"));
}
document.write("
"); function mString(s, n) { var m = ""; for (var o = 0; o < n; o++) m += s; return m; }
Challenge 67 (By $Vengat)
