8,91+25,7*1,09

To calculate the expression \( 8.91 + 25.7 \times 1.09 \), follow the order of operations (multiplication before addition):

1. First, calculate \( 25.7 \times 1.09 \):

   \[ 25.7 \times 1.09 = 27.973 \]

2. Now, add \( 8.91 \) to the result:

   \[ 8.91 + 27.973 = 36.883 \]

So, \( 8.91 + 25.7 \times 1.09 = 36.883 \).