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I wonder if i try this calculation on scientific calculator, i am getting 6/2(2+1) = 1

and in mobile device, online and normal calculators it gives me,

6/2(2+1) = 9

from my knowledge and what i get taught, first one (answer = 1) was correct... but how normal calculator provide this? i am confused. please clarify..

i searched about this, found something called BODMAS rule was the reason for first one.. is it correct or anything else?

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Silent Spectator
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    The relative order of multiplication and division is ambiguous. Some calculators prioritize one over the other, some go left-to-right, and none of them are wrong. – Arthur Aug 03 '17 at 06:39
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    On the left one multiplication and division has equal precedence. On the right one multiplication has higher precedence than division (which is trash). – lasen H Aug 03 '17 at 06:40
  • $6/2(2+1)=(6/2);.(2+1)=3.3=9$ is wrong! – Chinnapparaj R Aug 03 '17 at 06:42
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    @lasenH Not necessarily. If I told you that the radius and circumference of a circle were related by $r = c/2\pi$, then common sense should tell you that the $2$ and the $\pi$ stick "closer together" than the $c$ and the $2$. It's still ambiguous, and I should have written $c/(2\pi)$ or $\frac c{2\pi}$, but calling it "trash" is a bit much. – Arthur Aug 03 '17 at 06:43

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