text:  module.exports = function toReadable(num){
    let arr = ['', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine','ten', 'eleven', 'twelve', 'thirteen', 'fourteen', 'fifteen', 'sixteen', 'seventeen', 'eighteen', 'nineteen'];
    let arr1 = ['', '', 'twenty', 'thirty', 'forty', 'fifty', 'sixty', 'seventy', 'eighty', 'ninety',];
    let units;
    let dozens;
    let hundreds;
    if (num ===0){
        return 'zero'
    }
      else if(num < 20){
        return arr[num];
  
      }else if(num >=20 && num <100){
        units = num%10;
        dozens = (num - units)/10;
        let n =`${arr1[dozens]} ${arr[units]}`;
        return n.trim();
  
      }else if(num%100 <20){
        units = num % 100;
        hundreds = Math.floor(num/100);
        let n = `${arr[hundreds]} hundred ${arr[units]}`;
        return n.trim();
      } 
        units = num%10;
        dozens = ((num-units)%100)/10;
        hundreds = (num-units-dozens*10)/100;
        let n = `${arr[hundreds]} hundred ${arr1[dozens]} ${arr[units]}`;
        return n.trim();
  
    }