Looking for digits that sum to 5

Suppose we're trying to create a number where the digits sum up to 5. You're given a positive integer as your input, n. Write a function that will take in n, and return a number with digits summing to exactly 5. You can assume the sum of the digits in the initial input will not exceed 5.

For example:

• Given 2, you should return 23
• Given 1, you should return 14
• Given 20, you should return 203