// Store saved numbers in an array

let savedNumbers = [];

// Addition function

function add(num1, num2) {

return num1 + num2;

}

// Subtraction function

function subtract(num1, num2) {

return num1 - num2;

}

// Multiplication function

function multiply(num1, num2) {

return num1 * num2;

}

// Division function

function divide(num1, num2) {

return num1 / num2;

}

// Remainder function

function remainder(num1, num2) {

return num1 % num2;

}

// Exponential function

function exponential(num1, num2) {

return Math.pow(num1, num2);

}

// Square root function

function sqrt(num) {

return Math.sqrt(num);

}

// Save function

function save(num) {

savedNumbers.push(num);

console.log(`Saved ${num}`);

}

// List function

function list() {

console.log(`Saved numbers: ${savedNumbers.join(', ')}`);

}

// Retrieve function

function retrieve(index) {

if (index > 0 && index <= savedNumbers.length) {

console.log(`Retrieved ${savedNumbers[index - 1]}`);

return savedNumbers[index - 1];

} else {

console.log(`Result does not exist at location.`);

}

}

// Main loop

while (true) {

// Get user input

const input = prompt('Enter a command (e.g. 10 + 20, M, P, R1)');

// Parse input

let num1, num2, operator, saveIndex;

if (input.startsWith('R')) {

// Retrieve command

saveIndex = parseInt(input.slice(1));

result = retrieve(saveIndex);

} else if (input === 'M') {

// Save command

save(result);

} else if (input === 'P') {

// List command

list();

} else {

// Calculate result

[num1, operator, num2] = input.split(' ');

num1 = parseInt(num1);

num2 = parseInt(num2);

switch (operator) {

case '+':

result = add(num1, num2);

break;

case '-':

result = subtract(num1, num2);

break;

case '*':

result = multiply(num1, num2);

break;

case '/':

result = divide(num1, num2);

break;

case '%':

result = remainder(num1, num2);

break;

case '^':

result = exponential(num1, num2);

break;

case 'sqrt':

result = sqrt(num1);

break;

default:

console

}

}

}

Can you fix this code in javascript so it can work following these rules:

Users now should be able to use the = operator or enter to do calculations.

Program should be able to handle incorrect inputs (like other characters or symbols). If a user enters incorrect input, the program resumes from the last correct input. No exceptions should occur.

Users should be able to use the M character to save the last input or result. Users can save as many numbers as they want. Users can list the saved numbers by using the P character. User can retrieve and continue with any number they want from the list by using Rn where n is any number from the list larger than 0 (e.g. R1 will retrieve the first save element, R2 second, ) Entering invalid number should print: Result does not exist at location. List exists as long as the program runs. Everytime program is restarted the list is empty. Store list in memory.