369. 40 077· 7 – 199 099 9 020· 6 + 53 901

1. $$40 077 \cdot 7 - 199099$$
   1. $$40077 \cdot 7 = 280539$$

        40077
      x      7
      -------
       280539
      

   2. $$280539 - 199099 = 81440$$

       280539
      -199099
      --------
        81440
      

2. $$9020 \cdot 6 + 53901$$
   1. $$9020 \cdot 6 = 54120$$

        9020
      x     6
      ------
       54120
      

   2. $$54120 + 53901 = 108021$$

       54120
      +53901
      -------
      108021
      

Ответ: 40 077· 7 – 199 099 = 81440; 9 020· 6 + 53 901 = 108021.