He solved a large number of problems.

Understanding numbers is important for solving math problems.

He was bedridden with illness for several days.

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

I know this is sudden, but could you arrange a time for me to meet with the president?

I know this is sudden, but could you arrange a time for me to meet the president?

The expansion of this problem should be limited.

In this classical literature, the technique of kakarimusubi is skillfully used.

The person in charge is currently out of office.

He remembered something funny and let out a guffaw.