Express the following fraction as a decimal by converting the denominator to $10, 100$ or $1000$ (as the case may be):

$\frac{9}{5}$

Express the following fraction as a decimal by converting the denominator to $10, 100$ or $1000$ (as the case may be):

$\frac{16}{25}$.

Express the following fraction as a decimal by converting the denominator to $10, 100$ or $1000$ (as the case may be):

$\frac{23}{50}$.

Express the following fraction as a decimal by converting the denominator to $10, 100$ or $1000$ (as the case may be):

$\frac{47}{200}$.

Express the following fraction as a decimal by converting the denominator to $10, 100$ or $1000$ (as the case may be):

$\frac{86}{125}$.

Add the following:

$56.345 + 74.76 + 897.098$

Add the following:

$1,003.004 + 1.3467 + 2.398$

Add the following:

$5.897 + 120.34 + 2,000.009$

Add the following:

$1,234.432 + 567.834 + 78.342$