import sys
read=sys.stdin.buffer.read
readline=sys.stdin.buffer.readline

def find_frac(a, b):
    if a==0: return '0'
    ans = '-' if (a<0)^(b<0) else ''
    a=abs(a);b=abs(b)
    ans+=str(a//b)
    if a%b==0: return ans
    ans+='.'
    seen={}
    rem=a%b
    while rem:
        if rem in seen:
            ans=ans[:seen[rem]] + '(' + ans[seen[rem]:] + ')'
            break
        seen[rem]=len(ans)
        rem*=10
        ans += str(rem//b)
        if len(ans) > 2*10**6: 
            print(-1)
            exit()
        rem %= b
    return ans

a,b=map(int,read().split())
print(a,b)
s=find_frac(a,b)
if '(' in s: print(-1)
else:
    for i in range(len(s)-1,-1,-1):
        if s[i]!='0':
            print(s[i])
            break
    else:
        print(-1)