1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,30,40,50,60,70,80,90． 100,200,300,1000,2000,3000． 一万,两万,三万 十万,二十万 一百万,两百万 一千万,两千万 一亿,十亿one,two,three,four,five,six,seven...