The multiplication and division of decimal numbers

The answer is given with as many decimals as there are in the least accurate starting number.

Calculate. Give the answers at the appropriate accuracy.

When the answer is required with a certain accuracy,

in additions and subtractions, all output values must be taken at least one decimal place more accurately than the desired accuracy of the answer.
in multiplications and divisions, all output values must be taken at least one significant figure more accurately than the desired accuracy of the answer.