Concatenation with space

Hi all,

Need ur kind help in concatenating as below.

L_MATERIAL(18) = LQAMCANO240033. "Material no length varies upto 18 char

L_BATCH = T91.

Output should be LQAMCANO240033&&&&T91

& denotes space

Pls note that there should be space in case the material no is smaller.

Regards,

Karthik