https://dasturchi.uz/ofis-dasturlari/excel/3-1-4-kopaytmalar-yigindisini-hisoblash-sumproduct-%d1%81%d1%83%d0%bc%d0%bc%d0%bf%d1%80%d0%be%d0%b8%d0%b7%d0%b2/
3.1.4. Ko’paytmalar yig’indisini hisoblash (Sumproduct, СУММПРОИЗВ)