Answer:
103
Step-by-step explanation:
You would have to use PEMDAS (parenthesis, exponents, multiplication, division, addition, subtraction) from left to right.
1+4+3-7+5*23-13+450123*0 (I multiplied 1 by 4).
1+4+3-7+115-13+450123*0 (I multiplied 5 by 23).
1+4+3-7+115-13+0 (I multiplied 450123 by 0).
Now, add and subtract from left to right and you get 103.
