I have in mind a zeta function that is simple to understand, extremely tedious to calculate.

"The history books which contain no lies are extremely tedious."

It would be extremely tedious to go through my life chronologically; therefore I shall break off, from time to time.

The problem, he said, is that finding them is extremely tedious.

The restoration specialist began the extremely tedious process of redisplacement on them.

Selectivity within a world would be extremely tedious and uncertain.

This was why this search promised to be extremely tedious.

She sighed as though finding the proceedings extremely tedious.

Her sculptures must be assembled and disassembled carefully, which sometimes involves an extremely tedious process.

Much of the lab work is extremely tedious, getting published seems very political.