beautiful day at the movies hackerrank solution

 const reversedNum = num => parseFloat(num.toString().split('').reverse().join('')) * Math.sign(num)
function beautifulDays(i, j, k) {
    let count = 0;
    for(let s=i;s<j+1;s++) {
       if(((s - reversedNum(s))/k)%1===0) {
           count++
       }
    }
    return count
}