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<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>HTML output Tag</title> </head> <body> <form oninput="result_sum.value=parseInt(z.value)+parseInt(x.value)"> <input type="range" id="z" name="z" value="30" /> + <input type="number" id="x" name="x" value="20" /> = <output name="result_sum" for="z x">50</output> </form> </body> </html>