use calculated total later

I am using the following script to update the quantity of a product, and calculate the subtotal. How can I reuse this quantity and subtotal later in the form?
Code:
```<script language="JavaScript" type="text/javascript">
<!--

/* This script is Copyright (c) Paul McFedries and
Logophilia Limited (http://www.mcfedries.com/).
Permission is granted to use this script as long as
this Copyright notice remains in place.*/

function CalculateTotal(frm) {
var order_total = 0

// Run through all the form fields
for (var i=0; i < frm.elements.length; ++i) {

// Get the current field
form_field = frm.elements[i]

// Get the field's name
form_name = form_field.name

// Is it a "product" field?
if (form_name.substring(0,4) == "PROD") {

// If so, extract the price from the name
item_price = parseFloat(form_name.substring(form_name.lastIndexOf("_") + 1))

// Get the quantity
item_quantity = parseInt(form_field.value)

// Update the order total
if (item_quantity >= 0) {
order_total += item_quantity * item_price
}
}
}

// Display the total rounded to two decimal places
frm.TOTAL.value = round_decimals(order_total, 2)
}

function round_decimals(original_number, decimals) {
var result1 = original_number * Math.pow(10, decimals)
var result2 = Math.round(result1)
var result3 = result2 / Math.pow(10, decimals)
}

function pad_with_zeros(rounded_value, decimal_places) {

// Convert the number to a string
var value_string = rounded_value.toString()

// Locate the decimal point
var decimal_location = value_string.indexOf(".")

// Is there a decimal point?
if (decimal_location == -1) {

// If no, then all decimal places will be padded with 0s
decimal_part_length = 0

// If decimal_places is greater than zero, tack on a decimal point
value_string += decimal_places > 0 ? "." : ""
}
else {

// If yes, then only the extra decimal places will be padded with 0s
decimal_part_length = value_string.length - decimal_location - 1
}

// Calculate the number of decimal places that need to be padded with 0s
var pad_total = decimal_places - decimal_part_length

if (pad_total > 0) {

// Pad the string with 0s
for (var counter = 1; counter <= pad_total; counter++)
value_string += "0"
}
return value_string
}

//-->
</script>```
Code:
```<TR>
<TD align=center><INPUT TYPE=TEXT NAME="PROD_SP_169.95" SIZE=3 MAXLENGTH=3 onChange="CalculateTotal(this.form)"></TD>
<TD></TD>

<TD>Bike Usa Stabilizer Kit</TD>

<TD></TD>

<TD align=right><SPAN id=UnitPriceText>\$169.95</SPAN></TD>

<TD></TD>
<TD align=right><INPUT TYPE=TEXT NAME=TOTAL SIZE=10 onFocus="this.form.elements[0].focus()"></TD>
</TR>```

now I want to put it later in the form(confirm):
Code:
```<TR>
<TD align=right id=TableQuantity>1</TD>
<TD></TD>

<TD colspan=3 id=TableProduct>Stabilizer Wheels Kit</TD>

<TD></TD>
<TD align=right id=TableUnitPrice>\$169.99</TD>
<TD></TD>
<TD align=right id=TableExtPrice>Calculated Total Here</TD>
</TR>```
Thank You! Any help is appreciated!