Challenge #352 [Easy] Making Imgur-style Links

function Base62 {
    param(
    [ValidateRange(0, [int]::MaxValue)]
        [int]
        $NumberInput

    )

    process {


        [string]$Symbols = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
        [int]$Radix = $Symbols.Length
        [string]$Output = ""

        Do {

            $Output = '{0}{1}' -f $Output, $Symbols[($NumberInput % $Radix)]
            $NumberInput = [Math]::Floor([decimal]($NumberInput /= $Radix))

        }
        While ($NumberInput -gt 0)
        $Output

    }
}



Base62 187621 # => 9OM
Base62 237860461 # => 3n26g
Base62 2187521 # => B4b9
Base62 18752 # => sS4