conversations.from: human
conversations.value: Can you guide me through solving this problem: Parker went to the gym and found 4 twenty pounds dumbbells set up for weightlifting. He added two more dumbbells to the setup and started his exercises. How many pounds of dumbbells is Parker using for his exercises?
conversations.from: assistant
conversations.value: 4 twenty-pound dumbbells weigh 4*20 = 80 pounds.
  When Parker added two more dumbbells to the setup, he increased the weight by 2*20 = 40 pounds.
  The dumbbells that Parker used to do his exercise weigh a total of 40+80 = 120 pounds.