I am wanting to try out some multiple exposure on the same negative of the same scene on some coastal work tomorrow.

Scenario:
The meter reading is 1/4 second at f22 but to use 1/125th second at f22, divide 125 by 4, the answer is 31 multiple exposures at 1/125th.

Is there anything else I need to be aware of or will the 31 exposures at 1/125th give me the same density as a single exposure at 1/4