Every positive number x is the product of two normal numbers.
There seemed to be a more than normal number of people at the site.
"We'd gone way beyond the normal number of dates where you usually kiss," she said.
Other kinds of blood cells are typically present in normal numbers.
From now on, you will keep to the normal number of hours in a day.
A peace march in Moscow today was attended by no more than 200 people - a normal number for such events.
There were a few more than the normal number of customers inside.
The existence of a normal number follows from (a) immediately.
But because the normal number is about 1,000, the improvement was not major.
The rest of the time you just put the normal number.