Write a short program which takes in a positive number of seconds representing an age, and outputs an estimate of that time in English.

Your program must output the *least precise* amount of time which has past, among the following metrics and their lengths in seconds:

    second = 1
    minute = 60
    hour   = 60 * 60
    day    = 60 * 60 * 24
    week   = 60 * 60 * 24 * 7
    month  = 60 * 60 * 24 * 31
    year   = 60 * 60 * 24 * 365

**Examples**

    input      : output
    1          : 1 second
    59         : 59 seconds
    60         : 1 minute
    43200      : 12 hours
    86401      : 1 day
    1815603    : 3 weeks
    1426636800 : 45 years

**Rules**

 
 - No specification for 0 or negative inputs.
 - Follow proper pluralization. Every measure greater than 1 must include an `s` following the word.
 - You may not use a pre-existing library which serves the function of the entire program.
 - This is a code golf, shortest program wins the internet points.
 - Have fun!