<!DOCTYPE html>


<html>


<head>

    <title>Basic Multiplication</title>

    <link rel="stylesheet" type="text/css" href="./hello.css">

    <script src="./hello.js"></script>

</head>

<body>

<h3>Basic Mathematical Calculation</h3>

<div>

    <label for="fname">First Number</label>

    <input type="text" name="firstname" id="inputfirstvalue" placeholder="Your first input">    

    <label for="lname">Last Number</label>

    <input type="text" name="secondvalue" id="inputsecondvalue" placeholder="Your last input">

    <input type="submit" value="+" onclick="addNumber()">

    <input type="submit" value="-" onclick="subNumber()">

    <input type="submit" value="/" onclick="divNumber()">

    <input type="submit" value="*" onclick="mulNumber()">

    <input type="submit" value="reminder" onclick="remNumber()">

    <input type="submit" value="quotient" onclick="quoNumber()">

    <br>

    <br>

    <p id="res" style="background-color:rgb(23, 182, 235); font-size:45px; width: 70%;"></p>

    <br>

</div>

</body>

</html>


<!-- css code -->


input[type=text], select {

  width: 100%;

  padding: 12px 20px;

  margin: 8px 0;

  display: inline-block;

  border: 1px solid #ccc;

  border-radius: 4px;

  box-sizing: border-box;

}


input[type=submit] {

  width: 15%;

  background-color: #4CAF50;

  color: white;

  padding: 14px 20px;

  margin: 8px 0;

  border: none;

  border-radius: 4px;

  cursor: pointer;

}


input[type=submit]:hover {

  background-color: #45a049;

}


div {

  border-radius: 5px;

  background-color: #f2f2f2;

  padding: 20px;

}



<!-- javascript code -->

function addNumber() { let a=parseInt(document.getElementById("inputfirstvalue").value) let b=parseInt(document.getElementById("inputsecondvalue").value) let sum=a+b; document.getElementById("res").innerHTML="The sum of two number is "+sum; } function subNumber() { var value1=parseInt(document.getElementById("inputfirstvalue").value); var value2=parseInt(document.getElementById("inputsecondvalue").value); var sum=value1-value2; document.getElementById("res").innerHTML="Subtraction of two number is "+sum; } function mulNumber(value1,value2) { var value1=parseInt(document.getElementById("inputfirstvalue").value); var value2=parseInt(document.getElementById("inputsecondvalue").value); var sum=value1*value2; document.getElementById("res").innerHTML="Multiply of two number is "+sum; } function divNumber(value1,value2) { var value1=parseInt(document.getElementById("inputfirstvalue").value); var value2=parseInt(document.getElementById("inputsecondvalue").value); var sum=value1/value2; document.getElementById("res").innerHTML="Division of two number is "+sum; } function remNumber() { var value1=parseInt(document.getElementById("inputfirstvalue").value); var value2=parseInt(document.getElementById("inputsecondvalue").value); var sum=value1%value2; document.getElementById("res").innerHTML="Reminder of two number is "+sum; } function quoNumber() { var value1=parseInt(document.getElementById("inputfirstvalue").value); var value2=parseInt(document.getElementById("inputsecondvalue").value); var sum=parseInt(value1/value2); document.getElementById("res").innerHTML="quotient of two number is "+sum; }