A,B=map(int,input().split())
lim = 495
d = 10**lim
ans=A*d//B
ansf = []
for i in range(lim-2):
    ansf.append(abs(ans)//(1000*(10**i))%10)
ansf = ansf[::-1]
if ans < 0:
    print("-"+str(ansf[0])+"."+"".join([str(x) for x in ansf[1:]]))
else:
    print(str(ansf[0])+"."+"".join([str(x) for x in ansf[1:]]))