Task: Question Decomposition
Input (English): question: Which part has the least chargeable amount? List the part id and amount.
Output (English): #1 return parts 
#2 return amounts chargeable of #1 
#3 return #1 where #2 is  lowest 
#4 return part  id of #3 
#5 return amount  chargeable of #3 
#6 return #4 ,  #5