Read the article below and you will understand why Nigeria is so corrupt. A police station in UK bought a unit of Keke Napep at E16974. The naira equivalent of this is 16974x800=13579200. How much is keke sold in Nigeria? From an authoritative source it goes for less than #2m.
Let us stop looking far for how corruption became endemic in Nigeria. It started with our teacher and mentor.

Gwent Police tuk-tuks: Force spent £68k on four vehicles.
A police force spent nearly £68,000 buying four tuk-tuks to help fight crime, it has emerged.

Gwent Police bought four of the vehicles at £16,974 each, or £67,896, the force said in response to a BBC Wales Freedom of Information request.

The funding for the purchase is aimed at tackling specific safety and crime prevention issues, police said.

The force's annual vehicle budget is £3.1m - although that includes £1.6m rolled over from the year before.

The three-wheelers, which are well known for being used as taxis in Asian countries in particular, will be used as "safe spaces" where crimes can be reported, help sought and crime prevention advice given, Gwent Police has said.

As a comparison, the cost of a Nissan Micra is roughly between £14,500 and £19,000, depending on the model.
https://www.bbc.com/news/uk-wales-63378312

Keke is used as a case study

And bro,
That's 13 million

Wahala