I use a microscope for biology experiments.

There is a state-of-the-art electron microscope in my laboratory.

I used an optical microscope for an experiment at school.

The magnification of this microscope is 100 times.

He magnified the map to check the details.

His salary is twice mine.

His salary is twice as much as mine.

Our company's sales have increased fivefold.

The success rate of this project is 80%.

This generator is very efficient.