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()
m = ["1869", "1968", "1689", "6891", "1689", "1986", "1896"]
l = ""
r = ""
a= a.replace("1", "")
a= a.replace("6", "")
a= a.replace("8", "")
a= a.replace("9", "")
for i in a:
    if i == '0':
        r+= i
    else:
        l+= i
if len(l)>0:
    print(l+ m[(7-int(l)%7)%7]+ r)
else:
    print(m[0]+ r)
