My favorite mode of transportation is the train.

He decided to start afresh, scrapping everything he had.

He decided to make a fresh start and begin a new life.

This program can perform very complex calculations.

He is interested in ancient mathematics.

How much is the calculation for this product?

Solving verbal arithmetic problems is difficult.

He is good at elementary arithmetic, and can solve calculation problems quickly.

No problem, I will do that job.

That proposal is completely unthinkable.