「食卓に電卓を☆Google電卓機能篇」記事へのコメント

7-11=

[TarZ (28055)]

　野暮かもしれませんが、バグではなくて仕様です。

How to use the Google calculator [google.co.jp]

You can force the calculator to try and evaluate an expression by putting an equals sign (=) after it. This only works if the expression is mathematically resolvable. For example, 1-800-555-1234= will return a result, but 1/0= will not.

　=をつけるとOKです。7-11= [google.co.jp]