In Japan, the order of multiplication is discussed online.
How much does it cost to buy five apples for 50 yen each?
At school, 50x5 = 250 is correct, and writing 5x50 = 250 is incorrect.
Many mathematicians say that the order of multiplication is meaningless, but some school teachers do not change their mindset. 
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@angristan @mayuutann i'll be writing 5x50 = 250 on anything I publish from here on out, just to rock the boat.
@resist1984 @angristan hahaha, but it seems that the order of teaching is different depending on the country. So that maybe be correct. 😅