The only way to know how long preparation will take is to understand each step.

However, the idea and the preparations took place well before.

Preparation took place until 1975, when production of the first Tu-142 began.

The preparations took several months, and during that time people talked about nothing else.

Inside half an hour preparations for the marriage took place.

It can do more, but the preparation and the materials take far longer.

Their other preparations took much longer, more than a day, but they had plenty of time.

It was there where preparations for a new museum building took place.

Although the preparation to the shot may take some time it is otherwise very easy.

Preparation took less than an hour, and everything came out perfectly.