I don't want to be that guy but 8 billion divided by 400 is 20 million. So to get a global average you would multiply the number here by 20 million.... 20 million people are not shot every day
Are you conflating the global population and US shots? I don't trust the gun stats I found, so I left them out of my fact check in the other comments. Added sources for those and OP is pretty accurate overall.
If that is the case than 827,000 people are shot every day in the US... That's not right either.
It's literally math for what they are saying when one person out of 400 is shot and it is scaled up to the US population. Even if it was rounded from .5 in a set of 400 that's still over 400k
The actual number is 316 per day. Still a bad number but that is .1% of the number they have given
Oh, yes, 1 in 400 is still the wrong proportion, but I guess you can't say a quarter of a person is shot every 8 months or whatever it would be, if you're just trying to make a quick and concise point.
Then why choose 400 people, or why include the shooting stat once they went with 400? The number would very much round down to zero, and the post says at least 1 person per day which means that's the lower bound
The number provided in the post is inaccurate to a real-world scale of US shootings. One person shot every seven years is instead accurate to real world data if the US population were scaled to 400 people.
316 shootings per day, every day for 7 years, is 807,380 people shot. 807,380 into 331,000,000 (the US population) is one in 400. Therefore if the US population were 400 people, there would be one person shot every 7 years.