Hello; Hello World; World

Write a function that takes an integer and:

• If the number is a multiple of 3, return "Hello".
• If the number is a multiple of 5, return "World".
• If the number is a multiple of both 3 and 5, return "Hello World".

Examples

hello_world(3) ➞ "Hello"

hello_world(5) ➞ "World"

hello_world(15) ➞ "Hello World"