conversations.from: human
conversations.value: Please show me the solution for: The rate for mowing a lawn is $14 per hour. David mowed for 2 hours a day for a week. He then spent half of the money he made from mowing a lawn on a pair of shoes and gave half of the remaining money to his mom. How much money did he have left?
conversations.from: assistant
conversations.value: David got $14/hour x 2 hours/day = $28 per day from mowing.
  So in a week, he had $28/day x 7 days = $196.
  A pair of shoes cost $196/2 = $98.
  David gave his mom $98/2 = $49.
  The total amount he spent and gave is $98 + $49 = $147.
  David is left with $196 - $147 = $49.