get string value of number upto 999

let lsb = ['', 'one', 'two', 'three', 'four', 'five', 'six', 'saven', 'eight', 'nine'],
mid = ['', 'ten', 'tweenty', 'therty', 'fourty', 'fifty', 'sixty', 'saventy', 'eighty', 'ninty'], 
msb = ['', 'one hundred', 'two hundred', 'three hundred', 'four hundred', 'five hundred', 'six hundred', 'saven hundred', 'eight hundred', 'nine hundred'],
num = 445;
input = String(num);

let msbBit = Number(input[0]),
midBit = input.length > 1 ? Number(input[1]) : 0,
lsbBit = input.length > 2 ? Number(input[2]) : 0;

let result =  `${msb[msbBit]} ${mid[midBit]} ${lsb[lsbBit]}`;

//result "four hundred fourty five"