Primary school mathematics, urgent! It is known that a = 7 / 8 = b * 1 = 5 / 2 * C = D * 8, and a, B, C, D are not equal to zero Put the four numbers a, B, C and D in descending order ( )>( )>( )>( )

Primary school mathematics, urgent! It is known that a = 7 / 8 = b * 1 = 5 / 2 * C = D * 8, and a, B, C, D are not equal to zero Put the four numbers a, B, C and D in descending order ( )>( )>( )>( )

a>b>c>d