Use a calculator to calculate the values of the following expressions. State the answers at the accuracy of one decimal place.

a) [[$ \displaystyle\frac {12.5 \cdot \tan 56,4°} {\tan 16°} ≈ $]]

b) [[$ \displaystyle\frac {11 - \tan 10°} {\tan 7° + \tan 14°} ≈ $]]

c) [[$ \tan 34° \cdot \left( 18.5 + \tan 22° + 1 \right ) ≈ $]]