Note to recorder:
Natural , rather slow speed please. Thank you.
Something which has to do with economics is economic.
Our use of the central heating is fairly economical.
Europe is more than an economic community.
Are electric cars economical to run?
If you've got a large family, it's more economical to travel by car than by train.
The country is in a bad economic state.
We cannot afford to employ more stuff in the current economic climate.
The major part of the population is against the government's economic policies.
It is not a very economical method of heating buildings.
Of course the plane is not the most economical form of transport.
Economical more often means "cost effective" or the best use of money.