Ответ:

  1. \((2.073\cdot5.82+4.18\cdot2.073+2.073\cdot90):2.073\cdot0.55\)
    \(=2.073(5.82+4.18+90):2.073\cdot0.55\)
    \(=100\cdot0.55=55\).
  2. \((1.25\cdot2.04\cdot7.7):(0.25\cdot1.02\cdot11)\)
    \(=(1.25:0.25)(2.04:1.02)(7.7:11)\)
    \(=5\cdot2\cdot0.7=7\).

Ответ: 1) 55; 2) 7.