In the case referred to in paragraph (1) of the preceding Article (including the case that is applied by the deemed replacement of terms pursuant to the provisions of paragraph (5) of that Article; the same applies below in this Section), if the business operator has reported the facts that fall under the acts subject to monetary penalty to the Prime Minister pursuant to the provisions of Cabinet Office Order, the Prime Minister must reduce the administrative monetary penalty by the amount obtained by multiplying fifty one-hundredth of the administrative monetary penalty calculated pursuant to the provisions of paragraph (1) of that Article; provided, however, that this does not apply if the report is made in anticipation of a payment order for monetary penalty to be issued because an investigation has been conducted for the acts subject to monetary penalty.