If ‘$$+$$’ means ‘$$-$$’, ‘$$\div$$’ means ‘$$+$$’, ‘$$-$$’ means ‘$$\times$$’, and ‘$$\times$$’ means ‘$$\div$$’. Which of the following will be the value of the expression?
$$81 \times 9 + 21 - 7 \div 147$$

A

303

B

294

C

6

D

9