Please teach me how to find the greatest common divisor.

In this experiment, we will measure the critical Reynolds number.

I am currently reading Numbers.

What is the value below this decimal point?

He has been living in this town for several decades.

He drew a decagon shape.

His company made a profit of one billion yen.

We have been working on this project for ten months.

My pet Bengalese finch is very cute.

My birthday is in November.