conversations.from: human
conversations.value: 14 less than two times the number of koi fish in the pond is 64. How many koi fish will you find in the pond?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: Let k be the number of koi fish in the pond
  14-2*k=64
  2*k=64+14=78
  2k=78
  k=78/2=39