If you frequently use your Calculator while browsing the internet then you can stop it as you can now use your Internet browser as a calculator. If you have Firefox installed in your computer and laptops then just set your default search Engine as Google in search box and then you can see that if your try to solve any multiplication, divide, Sum, Subtract or even percentage then you can simply get answer fast in your internet browser itself. For this you don't need any plug-in or add-on. We have made a video for this just have a look. Subscribe to Syconet World by Email.