def digit_shift_inv(N,l,digit):
    S=str(N)
    L=len(S)
    if l==0:
        return S
    elif L<=l:
        f="0"*(l-L)+S
        if len(f)>=digit:
            return "0."+f[:digit]
        else:
            return "0."+f+"0"*(digit-l)
    else:
        f=S[-l:]
        if len(f)>=digit:
            return S[:-l]+"."+f[:digit]
        else:
            return S[:-l]+"."+"0"*(digit-l)


A,B=map(int, input().split())
L=50
M=10**L
print(digit_shift_inv(A*M//B,L,50))