in a conventional quantitative plan simulation , it is practically impossible to prepare a spreadsheet - type data input template applicable to all types of plans . thus , a quantitative plan simulation system is required to handle a plurality of spreadsheets containing variously - formatted data . therefore , the present invention provides a simulation system , a simulation method and a simulation program which are configured to extract a numerical value , a mathematical formula or other kinds of data necessary for a quantitative plan simulation , based on a relevancy among numerical values and mathematical formulas or other kinds of data in a spreadsheet , and perform the quantitative plan simulation based on the extracted numerical values and mathematical formulas .