def sqrt(x):
    return x.sqrt()

from math import floor,ceil
from decimal import *
getcontext().prec = 100
getcontext().rounding = ROUND_HALF_DOWN
# getcontext().rounding = ROUND_FLOOR
# getcontext().rounding = ROUND_CEILING
D=Decimal

"""
pypyだと遅い
"""

x,y=map(D, input().split())
print("{:.50f}".format(x/y))