5. Some equations have been solved on the basis of a certain pattern. Find the correct answer for the unsolved equation on that basis: 2 x 3 x 5 = 523 6 x 4 x 1 = 164 8 x 2 x 4 = 482, then 6 x 8 x 2 = ?
6. In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question? 825 x 25 - 27 ÷ 10 = ?
9. In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question? 54 x 9 - 3 ÷ 4 = ?