### Numbers to Words

There are varying opinions amongst writers as to when one should spell out a number vs. using figures. However there are a few generally agreed upon rules for doing so.

There are 2 of them we will follow for this kata:

- Numbers beginning a sentence should be spelt out.
- Hyphenate all compound numbers from twenty-one through ninety-nine

Assume all the numbers given start sentences and your code will be used like a spell checker for grammar issues related to numbers.

Only worry about up numbers up to 4 digits long. Assume all numbers are positive.

#### Examples

1 digit | 2 digits | 3 digits | 4 digits |
---|---|---|---|

0 = zero | 10 = ten | 100 = one hundred | 2000 = two thousand |

5 = five | 21 = twenty-one | 303 = three hundred three | 3466 = three thousand four hundred sixty-six |

8 = eight | 77 = seventy-seven | 555 = five hundred fifty-five | 2400 = two thousand four hundred |

#### Hint

Solve for 1 digit, then move to 2 digits and so on.

### Bonus

The simplest way to express large numbers is usually best. Instead of 5300 being equal to five thousand three hundred it should return fifty-three hundred. This new rule only applies to 4 digit numbers.