Issue with Key figures on a Multicube

Hello People! Hope you're doing well...

I got a problem that needs to be resolved and I know this is the best place to look for the answer.

I have 2 cubes:

CUBE1

C1 C2 C3 KF1

-

1 1 1 50

1 1 2 75

1 2 1 100

2 1 1 25

2 2 1 30

2 2 2 50

CUBE2

C1 C2 KF2

-

1 1 150

1 2 100

2 1 35

2 2 85

Then I have a Multicube using these 2 infocubes.

In a query if I try to see the info what I see is:

C1 C2 C3 KF1 KF2

-

1 1 1 50

1 1 2 75

1 1 # 150

1 2 1 100

1 2 # 100

2 1 1 25

2 1 # 35

2 2 1 30

2 2 2 50

2 2 # 85

BUT (and here comes the big question...) what I need is to see the query like this, sol I can have a third CKF that should be KF1/KF2:

C1 C2 C3 KF1 KF2 CKF(KF1/KF2)

-

1 1 1 50 150 0.333

1 1 2 75 150 0.5

1 2 1 100 100 1

2 1 1 25 35 0.714

2 2 1 30 85 0.353

2 2 2 50 85 0.588

Any Clue? I Would really appreciate (and award) any helpfull answer...

Thanks in advance...

Sebastian.-