You have number *a*, whose decimal representation quite luckily contains digits 1, 6, 8, 9. Rearrange the digits in its decimal representation so that the resulting number will be divisible by 7.

Number *a* doesn't contain any leading zeroes and contains digits 1, 6, 8, 9 (it also can contain another digits). The resulting number also mustn't contain any leading zeroes.
The first line contains positive integer *a* in the decimal record. It is guaranteed that the record of number *a* contains digits: 1, 6, 8, 9. Number *a* doesn't contain any leading zeroes. The decimal representation of number *a* contains at least 4 and at most 10<sup class="upper-index">6</sup> characters.
a = input()
f1 = False
f6 = False
f8 = False
f9 = False

r = 0
c = 0

res = ""

for i in range(len(a)):
	if (a[i] == '0'):
		c += 1
		continue
	if (a[i] == '1' and not f1):
		f1 = True
		continue
	if (a[i] == '6' and not f6):
		f6 = True
		continue
	if (a[i] == '8' and not f8):
		f8 = True
		continue
	if (a[i] == '9' and not f9):
		f9 = True
		continue

	res += a[i]
	r = (r*10 + int(a[i]))%7

md = 7 - (r*10000 % 7)
if (md == 7):
	md = 0

v = ["1869", "1968", "1689", "6198", "1698", "1986", "1896"]
res += v[md]

res += "0" * c

print(res)
		 
	  	  		 				 		  	   	   		 		