<?php // nominal_rate, npery, Result return [ [ 0.052499999999999998, 4, 0.053542667370758003, ], [ 0.10000000000000001, 4, 0.103812890625, ], [ 0.10000000000000001, 2, 0.10249999999999999, ], [ 0.025000000000000001, 2, 0.025156250000000002, ], [ 1, 0, '#NUM!', ], ];