I was going though basic school equation and answers by community members were different. They were divided in 2 sections, like given below.
Question: $ 72÷3(4)+7$
Option 1: Divide by 3 then x 4
Option 2: Divide by 12
I was wondering even if there is single number within brackets, it should be treated first i.e. $72 ÷ 12 + 7$; but many said it is wrong as parentheses or brackets defines the operation precedence of variables only within the bracket. Once the equation within the bracket is solved to single digit then it should be treated as multiplication sign.
i.e $72 ÷ 3 \cdot 4 + 7$;
Different calculators do show different results for the same, see attached images.
showing divide by 3 first then multiply by 4, thus giving answer as 103.

Showing divide by $12$ by treating $3(4)$ before division, thus giving answer $13$.

I know that while these calculators are based on their embedded chips, but which is correct way?