def digital_root(n)
	ap = 0
	n = +(int(n))
	while n >= 10
		sum = 0
		for digit in str(n)
			sum += int(digit)
		end
		n = sum
		ap += 1
	end
	return {ap, n}
end

println "here"

if main
	values = {627615, 39390, 588825, 393900588225, 55}
	for n in values
		aproot = digital_root(n)
		println format("%12d has additive persistence %2d and digital root %d.", n, aproot[0], aproot[1])
	end
end