Step S14: when having calculated the ordering number HM in the step S13, the CPU 12 in the printing management apparatus PK serves as the comparison section 24 to determine whether the ordering number HM “74” is consistent with an integer multiple of one of the ordering standard numbers HKM “24”, “100”, “240” and “800” in the ordering standard number information HKMJ (shown in FIG. 7) or not. Since the ordering number HM “74” is not consistent with the integer multiple of any of the ordering standard numbers HKM “24”, “100”, “240” and “800”, the processing goes to “NO”.

Incidentally, when the ordering number HM is consistent with the integer multiple of one of the ordering standard numbers HKM, the processing goes to “YES”.

Step S15: when having determined that the ordering number HM “74” is not consistent with the integer multiple of any of the ordering standard numbers HKM in the step S14, the CPU 12 in the printing management apparatus PK serves as the calculation section 23 to change, i.e. increase or reduce the ordering number HM “74” so as to make the ordering number HM consistent with the integer multiple of one of the ordering standard numbers HKM “24”, “100”, “240” and “800”.

Here, the ordering number HM “74” is, for example, closest to “72” which is three times as many as the ordering standard numbers HKM “24”. Therefore, the CPU 12 serves as the calculation section 23 to reduce the ordering number HM from “74” to “72” and serves as the confirmation/resetting section 25 (shown in FIG. 8) to confirm the ordering number HM as “72”.