15In paragraph 4(1), for the words following sub-pargraph (b) there shall be substituted the following words—
“(c)the difference between the respective amounts of tax which would be so chargeable on the assumptions—
(i)that the appropriate fraction only of the payment (after deducting any relief applicable thereto under the preceding provisions of this Schedule) had been made, and
(ii)that no part of the payment had been made,
and disregarding, in each case, any other emoluments of the office or employment,
and the amount to be deducted shall be the difference between the amount ascertained at (a) and the sum of the amount ascertained at (b) and the appropriate multiple of the difference ascertained at (c).”