关于数字英文.一万 十万 一百万 一千万 一亿 十亿 一百亿 还有像1564686 这种的 还有in addition

ten thousand,a hundred thousand,a million,ten million,a hundred million,a billion,ten billion
把数字每三位用,号隔开,也就是 1,564,686,然后根据数位分别书写
one million,five hundred and sixty-four thousand,six hundred and eighty six.
in addtion to 里的 to是介词,后面必须接名词或名词性短语

ten millions

ten thousand
one hundred thousand
one million
ten million
one hundred million
one billion
ten billion