question: Valerie earns $5000 per month, 1/2 of what her brother earns. If their mother earns twice their combined salary, what's the total amount of money they all have together?
answer: Valerie's brother earns 2 * $5000 = $<<2*5000=10000>>10000
  Their combined salary is $5000+$10000 = $<<5000+10000=15000>>15000
  Their mother earn twice their combined earnings, which is 2*$15000 = $<<2*15000=30000>>30000
  The total amount of money they all have is $15000+$30000 = $<<15000+30000=45000>>45000
  #### 45000