いとも簡かん単たんに

adverb

very easily; with the greatest ease

Emphasizes that something is accomplished with surprising or remarkable ease. Often used when the result seems disproportionate to the effort.

• 彼かれはいとも簡かん単たんにその問もん題だいを解といた。

  He solved the problem very easily.

• いとも簡かん単たんに世せ界かい記き録ろくを更こう新しんした。

  They broke the world record with the greatest ease.