activity cost

I have an operation in a routing of a material. The activity type is 1002 as machine .

The formula for machine is SAP006= (machine hr X operation qty) / base qty.

Machine hr= 480 min

base qty=130

in KP26 the cost for the activity type 1002 is 11 rs.

In CK13, for the material, the value for this activity type conmes as 0.7. Can anybody tell me how this is calculated.