ok, so 84,480 pennies make up one mile stacked. so timesing 84,480 by 93,000,000 equals 7.85664e+12 so, i guess it would be 7.8billion to the 12th power. i hope this helps. if i am wrong i am so sorry.
Perpendicular lines have slopes that are inverse reciprocals of each other. That would give you the new slope in your equation. After that plug (6,2) into point slope form and solve to get your final equation.
