単たん純じゅん計けい算さん

noun, noun or participle which takes 'suru'

simple calculation; straightforward arithmetic

Refers to a calculation that is uncomplicated, often basic arithmetic. Can also imply a naive or overly simplistic estimate when used figuratively.

• この問もん題だいは単たん純じゅん計けい算さんで解とけます。

  You can solve this problem with a simple calculation.

• 単たん純じゅん計けい算さんすると、一いっか月げつの支し出しゅつは約やく十じゅう万まん円えんになる。

  A simple calculation shows that monthly expenses come to about 100,000 yen.