(2,75*3/5+2,2:1)*1 челую 1/11 __________________________ (39/40-0,575):4/5*0,8

Let's solve the expression step by step, starting from the top and breaking down each part.

Numerator: \( (2.75 \times \frac{3}{5} + \frac{2.2}{1}) \times \frac{1}{11} \)

1. Calculate \( 2.75 \times \frac{3}{5} \): \[ 2.75 \times 0.6 = 1.65 \]

2. Add \( 1.65 + 2.2 \): \[ 1.65 + 2.2 = 3.85 \]

3. Now, multiply by \( \frac{1}{11} \): \[ 3.85 \times \frac{1}{11} \approx 0.3500 \]

Denominator: \( \left( \frac{39}{40} - 0.575 \right) \div \left( \frac{4}{5} \right) \times 0.8 \)

1. Calculate \( \frac{39}{40} - 0.575 \): Convert \( 0.575 \) into a fraction: \[ 0.575 = \frac{575}{1000} = \frac{23}{40} \] Now calculate the subtraction: \[ \frac{39}{40} - \frac{23}{40} = \frac{16}{40} = \frac{2}{5} \]

2. Divide by \( \frac{4}{5} \): \[ \frac{2}{5} \div \frac{4}{5} = \frac{2}{5} \times \frac{5}{4} = \frac{2}{4} = \frac{1}{2} \]

3. Finally multiply by \( 0.8 \): \[ \frac{1}{2} \times 0.8 = 0.4 \]

Final Calculation: Now that we have the numerator and denominator: \[ \frac{0.3500}{0.4} = 0.875 \]

Thus, the final answer is approximately \( 0.875 \).