Measuring distances in a jiffy!

How would you like it if you were able to tell the exact distance between any two places in your city without referring to any map? Won't that be very convenient? I have discovered a way to do just that. It works most of the time, and it is very easy. Here's how it goes.

Most of the roads in Bellevue are either North-South or East-West. North-South roads are called Avenues and East-West roads are named Streets. The roads are numbered in sequence, for e.g. 148th Ave NE or NE 12th St. Every increase or decrease in a count implies a distance of 100 meters. That is, the distance between 148th Ave NE and (its adjacent avenue) 140th Ave NE is (148-140)*100=800 meters. Once you know this simple fact, finding distances is simple arithmetic. For e.g. distance between Crossroads mall (junction of 156th Ave NE and NE 8th St) and Bellevue Square mall (104th Ave NE & NE 4th St) would be: (156-104)*100 + (8-4)*100 = 5,200 + 400 = 5,600 meters = 5.6 kms. Now, isn't that easy?