12 + 3 * 4 / 5 - 6 = -2// num1 is assigned value of 2// operator is assigned value of +// num2 is assigned value of 3// total is assigned the value of 5// num1 is assigned the value of 5// num2 and operator are cleared// operator is assigned value of *// num2 is assigned value of 4// total is assigned value of 20// num1 is assigned value of 20// num2 and operator are cleared// operator is stored value of /// num2 is assigned value of 5// total is assigned value of 4// num1 is assigned value of 4// num2 and operator are cleared// operator is assigned value of -// num2 is assigned value of 6// total is assigned value of -2// num1 is assigned value of -2// num2 and operator are cleared// operator is assigned value of =