Solutions

      
      1. 7777777
             96787 x 21817 = 2111601979.
      2. Mothing but stras
             10 000 214 775 : 111 = 90 092 025,    90 092 025 : 225 = 400 409.
      3.
             325 x 777 = 252525.
      4. Squares and circles
             339 x 264 = 89496.
      5. Squares and numbers



      
      6. Numbers and squares



      
      7. Odd and even
            1. 286 x 379 = 108 394.    2. 339 x 268 = 90 852.
      8. The lonely eight
            123 456 789 x 8 = 987 654 312.
      9.
            
      10. Square and kube
            BLUE = 4761 (692), STRAND = 328509 (693).
      11. Biography
            BIOGRAPHY = 236 415 789.
      12. The lion and the bear
            LION = 2048, BEAR = 9536.
      13. Five times five
            FIVE = 2846.
      14. Eight times eight
            EIGHT = 90 625.
      15. Rebus
            24 068 x 43 526 = 1 047 583 768.
      16. Multuplyinng the letters
            142 857 x 516 342 = 73 763 069 094.
      17. Four squared
            FOUR = 3201.
      18. The score
            DOREMIFASOL = 40 275 683 109.
      19. The problem with zed
            ZED = 156.

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