英文习惯是三位一个数
23456780 就是 2 million and 346 thousand and 7 hundred and eighty.
82364580 同理 8 ******* *** 236 ******** *** 5 ******* *** ******。
405000000依然 405 million 没了
如果是4 050 000 000(比你的再多一位)就是4 billion and 50 million
two million three hundred and forty-six thousand seven hundred and eighty
eighty-two million three hundred and sixty-four thousand five hundred and eighty
four hundred and five million