Last Math Question, thanks!?

A new home-based entrepreneur, Laura Perez, subscribed to a long-distance telephone service that charged $0.36 a minute. Laura is very busy and makes many calls. She was shocked when her first bill showed 454 minutes and a total fee of $163.44. Laura shopped around and found a competing service offering $0.11 a minute. How much would she have saved on her first bill if she had been using the second service?