Evaluate the Riemann sum for $\displaystyle {f{{\left({x}\right)}}}={\ln{{\left({x}\right)}}}-{1.1}$ over the interval $\displaystyle {\left[{1},{5}\right]}$ using eight subintervals, taking the sample points to be midpoints.

$\displaystyle {M}_{{8}}=$

Report answers accurate to 6 places. Remember not to round too early in your calculations.