I am new, need help please.

Question

Can someone explain to me why the output is 81?

#include <iostream>
using namespace std;

int main() {

int x = 21, y = 31, z;

z = (x % 5) * 9 / (y % 6) * 9;

cout << z;

return 0;
}

Answer 1

(21%5) * 9 / (31%6) *9
(1)*9 / (1)*9
9/1*9
9*9
81

Answer 2

Next time specify the language in the tags

Answer 3

https://www.sololearn.com/learn/CPlusPlus/1609/

Go to last part and open the comment section , there I had written detailed comment how operator precedence works.

Hope this helps ☺️☺️.