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()
cnt=[0]*10
for i in (1,6,8,9):
	cnt[i]=-1
for i in a:
	cnt[int(i)]+=1
mod = [1869, 1968, 9816, 1886, 1698, 6298, 1896]
modCnt=0
for i in range(1,10):
	for j in range(cnt[i]):
		modCnt= (10*modCnt + i)%7
		print(j, end="")
print(mod[(7-modCnt)%7], end="")
print("0"*cnt[0])
