Can you solve this puzzle? It stumps many adults, but 6-year-olds find it easy

This puzzle is part of an entrance exam for a Chinese primary school. The test is taken by 6-year-old students who don't seem to have too much trouble solving it, according to Centauro.

Can you solve the puzzle?

The question is: What is the number of the parking spot covered by the car?

Students have just 20 seconds to solve it.

The video below reveals the answer: