1.0×[1.0×(0.75+65)+1.0×(2.5+4)]×1
    1.1×1.3×(0.75+65)×1
    0.677×(72.5×200^4)/(100×9896×281250)
    (0.45×10^6)/37500
    cos15
    0.1×94.38×〖0.2〗^2+0.177×10.73×〖0.2〗^2
    cos10
    1.0×[1.0×(1+65)+1.0×(2.5+4)]×1
    sin30
    1.1×1.5×(2.5+4)×1
    1.1×1.3×(1+65)×1
    (961.7×10^3)/(0.991×15632.56×215)
    3000/219.93
    (45.7×10^6)/(0.98×401600×215)
    1.07-〖61.62〗^2/(44000×〖√(235/235)〗^2 )
    2728/44.27
    (51.6×10^6)/(0.78×401600×215)
    1.07-〖113.6〗^2/(44000×〖√(235/235)〗^2 )
    2728/101.74
    1/2×1.25×〖49.68〗^2×2.05×0.1

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