How to Make Simple Browser Calculator

This simple calculator created using javascript, so to open it is by using internet browser (Chrome, Mozilla, Internet Explorer, Opera, Safari, etc).

You can create this calculator for online calculator at your blog/website, or you can save it as a html file in your harddisk or USB flashdisk.
Just copy and paste script  below to the HTML/Javascript Gadget  for making online calculator.
Or Copy and paste to  Notepad and save as HTML file for offline calculator.

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