He is viewing that situation as a serious problem.

He views that situation as a problem.

No problem, I will do that job.

That proposal is completely unthinkable.

As a practical question, how are we going to fund this project?

Arithmetic operators are symbols used for mathematical calculations.

He likes to take a walk in the park at dusk.

We should always remember the power of Kannon in difficult times.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.