Overview: 1 questions will be solved this time.Among them
           ☆1 arithmetic calculations

[1/1 Formula]
    Work: Calculate the value of equation 2.1×(18.84+0.3×2+0.67×2.1)×(63.06+0.3×2+0.67×2.1)+2.1×(7.48+0.3×2+0.67×2.1)×3+2.1×(7.18+0.3×2+0.67×2.1)×3 .
    Question type: Mathematical calculation
    Solution:
          2.1×(18.84+0.3×2+0.67×2.1)×(63.06+0.3×2+0.67×2.1)+2.1×(7.48+0.3×2+0.67×2.1)×3+2.1×(7.18+0.3×2+0.67×2.1)×3
        =2.1×20.847×(63.06+0.3×2+0.67×2.1)+2.1×(7.48+0.3×2+0.67×2.1)×3+2.1×(7.18+0.3×2+0.67×2.1)×3
        =2.1×20.847×65.067+2.1×(7.48+0.3×2+0.67×2.1)×3+2.1×(7.18+0.3×2+0.67×2.1)×3
        =2.1×20.847×65.067+2.1×9.487×3+2.1×(7.18+0.3×2+0.67×2.1)×3
        =2.1×20.847×65.067+2.1×9.487×3+2.1×9.187×3
        =43.7787×65.067+2.1×9.487×3+2.1×9.187×3
        =2848.548673+2.1×9.487×3+2.1×9.187×3
        =2848.548673+19.9227×3+2.1×9.187×3
        =2848.548673+59.7681+2.1×9.187×3
        =2848.548673+59.7681+19.2927×3
        =2848.548673+59.7681+57.8781
        =2908.316773+57.8781
        =2966.194873
    Answer:2.1×(18.84+0.3×2+0.67×2.1)×(63.06+0.3×2+0.67×2.1)+2.1×(7.48+0.3×2+0.67×2.1)×3+2.1×(7.18+0.3×2+0.67×2.1)×3=2966.194873

Your problem has not been solved here? Please take a look at the  hot problems ！