求翻译：从主营业务收入出发，减去为取得主营业务收入而发生的相关费用、税金后得出主营业务利润。是什么意思？

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Proceeding from the main business revenue, minus for the purpose of obtaining Income from principal operations and the related costs, taxes, concluded that major business profit.

The profit table has the table generally, the table two parts.Table first explanation report form name establishment unit, establishment date, report form serial number, currency name, measuring unit and so on; The table is the profit table main body, reflected forms the management achievement each

Starting from the main business income, minus the costs related to occur for the purpose of obtaining revenue from core businesses, came to the main business profit after tax.