conversations.from: human
conversations.value: A global gym decides to replace all of its cardio machines.  They have 20 gyms.  Each gym has 10 bikes, 5 treadmills, and 5 elliptical machines.  The bikes cost $700 each.  The treadmills cost 50% more than that.  The elliptical machines are twice as expensive as the treadmills.  How much does it cost to replace everything?
  Give me a clear explanation.
conversations.from: assistant
conversations.value: The gym needs to buy 20*10=200 bikes
  20*5=100 each of treadmills and ellipticals
  So the bikes cost 200*700=$140,000
  The treadmills cost 700*1.5=$1,050 each
  So they cost a total of 1050*100=$105,000
  The ellipticals each cost 1050*2=$2100.
  So in total the ellipticals cost 2100*100=$210,000
  So the total cost of everything is 140,000+105,000+210,000=$455,000