Learning a new input method is difficult.

We have developed a new methodology to solve this problem.

The teacher gave me a book.

The teacher gave me some advice.

He solved a large number of problems.

I can't solve this problem because there are too many numbers.

Understanding numbers is important for solving math problems.

He was bedridden with illness for several days.

Thanks to 'Oshiete-kun', I have become good at Japanese.

The Fourier transform plays a very important role in signal processing.