The phrase "and a considerable number" is correct and usable in written English.
It can be used when referring to a significant quantity of items, people, or instances in a context where you want to emphasize the amount.
Example: "The survey revealed that many participants were satisfied with the service, and a considerable number expressed interest in future offerings."
Alternatives: "and a significant amount" or "and a large number".
In New York, many agents will be housed in hotels, and a considerable number will not be doubling up.
About 30 novels including fictional biographies, novels written in poetry, historical novels and a considerable number of science fiction novels".
The town became an important stagecoach junction point, and a considerable number of inns from the stagecoach era still exist.
"I don't think I am ready to go into specifics, but there will be a considerable number of Jewish inhabitants in the territories who will have to move and a considerable number of settlements," Mr. Olmert told reporters Sunday.
And the fear of some senior Democrats -- and a considerable number of freshly polled voters -- that the party hadn't disposed of the old antiwar bogy, but rather raised it once again, appeared all too well founded.
There are busy Latino and Asian neighborhoods nearby, but, after hours, you don't encounter many people in the spottily gentrified downtown area (and a considerable number of those you do are homeless).
And a country in which something like seventy per cent of the population believes in Satan and a considerable number disdains evolutionary biology is unlikely to be one in which "experiment not inherited truth" is flourishing.
Before Jack Kerouac left Northport, he had a farewell party at his house with a small group of friends, a parade of drinks and a considerable number of stories.
Like Stevie Wonder, he was a rare composer who could perform at a professional level on virtually all the instruments he required, and a considerable number of his recordings feature him in all the performing roles.
Among them are designs for U.S. coins (the head on the $10 gold piece of 1906 and the $20 gold piece of 1907) and a considerable number of portraits.
Before the partition of the island, most manufacturing was of goods produced for the domestic market by small owner-operated plants, and a considerable number of those plants were located in the area occupied by the Turks in 1974.
