Prado equals 16?... Or?...
Prado is a mid-sized Toyota Landcruser 4x4 SUV...
I think in the US and Canada it's known either as a Toyota 4 Runner (basic trim) or a Lexus GX (luxury trim).
If you are from North America, I can see how this can be confusing.
Anyhoo, my (annoying) neighbour owns one, with all the aftermarket add-ons, lift kits, bull-bar, roof racks, sidesteps etc.
Plus an oversized 4x4 badge/emblem on the back which I don't think is factory standard.
After seeing Khelders .gif, it gave me an idea to do the same, instead of using a Niko/Texta/Sharpie/felt-tip marker,
I figured it would be amusing to actually go buy some badges/emblems and complete the mathematical riddle on the back
of his SUV, then sit back and see how long until he realized the difference...