A length of rope is $3  \text{m}$~long. It is cut into four unequal lengths. Three of the pieces are $147  \text{cm}$,~$32.5  \text{cm}$~and $67  \text{cm}$. How long is the fourth piece? 
Overseas Competition->Knowledge Point->Word Problem Modules->Applying Addition and Subtraction->Simple Addition and Subtraction