数十亿

数十亿	shù shí yì	several billion
数	shǔ	to count / to count as; to regard as / to enumerate; to list
数	shù	number; figure / several; a few
数	shuò	(literary) frequently; repeatedly
十	shí	ten / 10
十亿	shí yì	one billion / giga-
亿	yì	100 million