This calculator is made for every Japanese in-mer.

Y--- Isn't it difficult to calculate at night because of darkness?
M--- Yes...
Y--- This latest calculator seems to be able to calculate using not only eyes but also ears.
M--- Oh, really?
Y--- Do you wanna install?
M--- Wanna do.
Y--- Let's do! So, let's install in tonight.
M--- Oh year!

!!!
It's spoken in a Japanese dialect.
Might be little difficult to understand for non-native.