Full text
an amount determined by the formula A × B/C where A is the amount so designated, B is the amount that may reasonably be regarded as the share of the taxpayer in the designated income of the trust received by the partnership in the fiscal period of the partnership in which the particular year ends (that fiscal period being referred to in this subsection as the “partnership’s period”), and C is the designated income received by the partnership from the trust in the partnership’s period,