conversations.from: human
conversations.value: Can you walk me through the solution of: A taco truck buys 100 pounds of beef.  They use .25 pounds of beef per taco.  If they sell each taco for $2 and each taco takes $1.5 to make how much profit did they make if they used all the beef?
conversations.from: assistant
conversations.value: They made 100/.25=400 tacos
  Each taco gives a profit of 2-1.5=$.5
  So they made a profit of 400*.5=$200