Problem:
  penny*8
  
  +
  nickel*2
  +
  quarter*8
  +
  dime
  
  Problem:
  penny*208
  
  +
  nickel*4
  
  Problem:
  penny*3
  
  +
  quarter
  +
  dime*20
  
  Problem:
  penny*3
  
  +
  nickel*40
  +
  quarter
  
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