function beautifulDays(i, j, k) {

    // Write your code here

    let count=0

​

for(let a=i;a<=j;a++)

{

  console.log(a)

   let b=a.toString().split('').reverse().join('');

  console.log(b)

    let result =Math.abs((a-b)/k)

  console.log(result)

    if(Number.isInteger(result))

    {

      count++

    }

}

  console.log(count)

return count

    }

beautifulDays(20, 23, 6)

​