If the Director cancels a person's operator licence that has been issued by the Director for a period of 3 years or 5 years whether—
(a) upon receiving a notification from the person under regulation 702 to surrender the operator licence; or
(b) under regulation 722—
the Director may refund part of the fee for the issue of the operator licence, calculated in accordance with the formula—
where—
A is the unexpired number of months of duration of the operator licence; and
B is the total number of months for which the operator licence was granted; and
C is the amount paid for the operator licence.