Translation of "Reckoned" in Spanish

He had reckoned without his host.

No contaba con la huéspeda.

He is a man to be reckoned with.

Él es un hombre que no hay que subestimar.

In carrying out the plan, you should have reckoned with all possible difficulties.

Al llevar a cabo el plan, deberías haber pensado en todas las posibles dificultades.