把数组每隔三位分在一起,用逗号隔开,从右向左,第一个三位按hundred,第二个按thousand,第三个按million,递四个按billion读
5,237,166,234 ,5对应billion,237对应million,166对应thousand,234对应hundred,所以读起来就是five billion two hundred and thirty-seven million one hundred and sixty-six thousand two hundred and thirty-four
16,250,064 sixteen million two hundred and fifty thousand and sixty-fou