<!DOCTYPE html> <html> <head> <title></title> </head> <body> <div id="result">multiply</div> <div id="result1">add</div> <div id="result2">subtraction</div> <div id="result3">exponention</div> <div id="result4">divide</div> <div id="result5">modulus</div> <div id="result6">increment</div> <div id="result7">decremnt</div> <script> var a = 20; var b = 23; var c = b*a; var d = b+a; var e = b-a; var f = b/a; var g = b%a; var h = b++; var i = b--; document.getElementById('result').innerHTML = c; document.getElementById('result1').innerHTML = d; document.getElementById('result2').innerHTML = e; document.getElementById('result3').innerHTML = f; document.g...