proc getchar_unlocked():char {. importc:"getchar_unlocked",header: "<stdio.h>" ,discardable.}
proc scan(): int =
  while true:
    let k = getchar_unlocked()
    if k < '0': return
    result = 10 * result + k.ord - '0'.ord
var a = scan()
var b = scan()
stdout.write $(a div b) , "."
for i in 0..<50:
  a = a mod b
  a *= 10
  stdout.write $(a div b)
echo ""