Akuyaku Reijou Tensei Oji-san (Web Comic) - Ch. 11

[MiniTaurus]

aww they're so cute studying together XD

 

[oukamihalf]

*chuuchuuchuu~*
Dolarmon: "Calculator from the east!"

 

[Notesha]

Guess no one talks about the Prince, who actually judge a potential bride by how much they can benifit the kingdom?

 

[Nakanowatari]

@Walter_vi_Britannia Eh how does that work? I can see that it works from your example, but why does it work mathematically? Is there a reason why 9 is the magic number?

 

[Walter_vi_Britannia]

@Nakanowatari That...are you really asking that question?

Oh, god. How am I gonna explain this with words?
Ok so, it works because of you add a zero at the end of 20,000 you get 200,000. That is 10x more than the original number. (And vice versa is 10x less.)

So assuming the total asset is 100,000. There is 20,000 and 80,000 in there. That's the original value.
So your other value comes out 280,000 cause you added 80,000 and 200,000. That's the wrong value.

So if you subtract the first value with the second value, you're getting 180,000. This is 9x more than the original because you already subtracted (20,000 + 80,000) from it; you already subtracted 100,000 from it. (You understand what I'm getting at here?)
In the 100,000 you subtracted, there was one of the 10x 20,000 already in there.

What did you do in your original mistake? You mistakenly wrote 200,000 instead of 20,000. Meaning, you mistakenly multiplied it by 10x. Your original answer should already have 1x in it but the other 9x in it is WRONG. So you divide it by 9 to get that 1.

 

[redjoker]

@nakanowatari

If you add/remove a zero, the number you get is either 0.1x or 10x as big as it's meant to be. So 1 - 0.1 (if you miss a zero) or 10 - 1 (if you add a zero) will give you 0.9 or 9. Hence, divide by nine to get the number you messed up or what the number should be.

 

[NinjaGoemon]

I think stocks aren't the only thing rising here.

 

[SnowyAkera]

@Nakanowatari Using the example of entering 20,000 instead of 2,000
2,000 can also be seen as 10% of 20,000
With the difference between them being 18,000 which can be seen as 90% of 20,000
90% is basically nine x 10%

So dividing the 18,000 (90%) by 9 shows you what 10% is, the 2,000 that should have been entered.

 

[Nakanowatari]

@Walter_vi_Britannia @redjoker @SnowyAkera thx guys, that actually makes a lot of sense now. Still pretty cool hack tho

 

[ShimizuA]

@Walter_vi_Britannia @redjoker
Thanks for the explanation. It's funny that I understand it more clearly with mathematical notation than actual examples lol.

 

[SnowyAkera]

We doing mafs bois

 

[lolfacesayshi]

Wow i learned something from reading manga.

 

[Samylwa]

HECK THIS IS AMAZING

TYSM for the update! <3

 

[Nematoda]

seeing the comments

Faith on Humanity Restored

but damn, Math never my strong point, just seeing them is just headache for me...

 

[BananowyJE]

Came here for laugh, not for high-tier abacus mathematics

 

[passer_by]

Math lessons for all

 

[Serenata]

today on isekai ojousama old man

 

[Chacha11]

Hahaha. Thankss

 

[deboradnts]

Thank you!!!

 

[Dreadkiwi]

Today we confirmed that old men have game.