Can some please explain me how.?

Question

var x = 8;
var y = x++ * 5;
var z = y%x;
document.write(z)

4

How??
From where the freaking 4 come.
Please explain me what's going on here

Answer 1

Struggling Alone

x++ is post increment which assign value first then increment x by 1 so

y = 8 * 5 and after assigning x = 9

So z = y % x = 40 % 9 = 4

Answer 2

40%9 = 4 : you get reminder by %
Modula operator. (40-36=4)

40/9 = 4 : you get quotient by / division operator. (9*4=36)

45%9=0 , 45/9=5 since 9*5=45

Answer 3

Ok... so it's like. First x which is 8 multiplied by 5 and become 40 then it incremented and x = 9 and y = 40
Then y (40) % x(9) = 3.6 or 4
If I'm not wrong so.

Answer 4

Struggling Alone

There is difference between modulus operator (%) and division operator (/)