A, B = map(int, input().split())

A *= 10**20
ans = list(str(A//B))
flag = False
if ans[0] == "-":
    flag = True
    ans = ans[1:]
while len(ans) <= 20:
    ans = ["0"]+ans
if flag:
    ans = ["-"]+ans
ans.insert(len(ans)-20, ".")

print("".join(ans))