Which of the following is an equivalent expression to 7/(5.3)^0 + 4 x 9

Q1:
7/1 + 4 x 9

Q2:
7/5.3^0 + 36

Q3:
7/0 + 4 x 9

Q4:
7/5.3 + 4 x 9

Q2:

7/5.3^0 + 36