The police coverage costs the city treasury more than $2 million a year, officials calculate, or double the original estimate.

But officials had not calculated on the declining Canadian dollar, now trading at 68 American cents.

In the past, Russian officials may have calculated that foreign investors would keep coming, because of the draw of natural resources.

Thus, officials calculate the institution's net savings at less than $200 million.

In Texas alone, officials calculate there are 40,000 to 50,000 abandoned wells that could pose pollution problems.

American officials calculate that the Tengiz oil will double tanker traffic on the strait in coming years.

Every single elected official calculates; it's at the core of representative democracy.

American officials calculate the Japanese companies' cost of producing chips at approximately $2.50 each.

Local officials calculate that the town needs 70 tons of food a day.

As a result, officials calculate, expansion of recycling citywide could require doubling the current 3,148-person collection force.