Add calculator

[yuntas]

Aim

when we watch stock info, I wanna make a calculation dividend. therefore, I want you to add calculator function.

for example, when we press this key =,

=123*456
56088

[smblott-github]

Thanks, @yuntas.

I'm not sure that's a suitable Vimium feature.

However, if you use Google as your default search engine, then you kind of have a calculator already:

• o, 3+4, <Enter>

Also, you can edit and resubmit your calculation:

• o, <Tab>, ...

[yuntas]

Thank you very much, Mr. smblott-github.