The cache is NOT located at the posted coordinates, but is within 3 kilometers. Do not attempt to find the cache on the 407.
I gained inspiration for this puzzle from my recent stint scoring the grade 9 math EQAO. While scoring, I thought to myself, "These types of questions would make a GREAT puzzle for a cache!"
To solve this puzzle, it will be beneficial for you to be versed in the grade 9 Ontario math curriculum. Such concepts will help you solve the following 3 problems that will help you find the coordinates of the cache location.
The final cache coordinates can be deciphered using the formula: N43 A.BC W079 D.EF
Where A, C, D, and F are 2-digit numbers.
See the problems here:

Are you smarter than a 9th grader - Problems
Depending on which day, and what time of day you visit the final cache location, you may need to use more or less stealth.