Write the following as decimal:

Three tens and seven tenths.

Write the following as decimal:

Four hundred sixteen and five hundredths.

Write the following as decimal:

Two hundred seven and fifty three hundredths.

Write the following as decimal:

Twelve and twelve thousandths.

Write the following as decimal:

$20+6+\frac{3}{10}$

Write the following as decimal:

$300+30+3+\frac{3}{10}+\frac{3}{100}$

Write the following as decimal:

$53+\frac{4}{100}+\frac{7}{10,000}$

Write the following as decimal:

$70+9+\frac{1}{10}+\frac{2}{100}+\frac{3}{1000}$

Express the following decimal as fraction. Reduce the fraction to its lowest term.

$0.8$.