How many people speak it as a second language?

How many people speak English as a second language? —Сколько людей говорит по-английски как на втором языке?

English is one of the wide spread languages in the world. Over 400 million people speak English as a second language. — Английский язык является одним из широко распространенных языков в мире. Более 400 миллионов человек говорят по-английски как на втором языке.

English is one of the wide spread languages in the world, is not it?

Over 400 million people speak English as a second language, do not they?