in the case of a claimant to whom regulation 22(1) or (2) (reductions in weekly applicable amounts in certain cases of unemployment benefit disqualification) applies, the proportion of the relevant amount specified therein appropriate to the number of days in the part-week;

where regulation 75(f) (modifications in the calculation of income) applies, one-half of the amount disregarded under regulation 75(f) less the weekly amount of any disregard under Schedule 8 or 9 appropriate to that payment.