jamesxhchen：在批评别人前先检查自己的英文是否有错误吧！

million 是一百万，即1 000 000

dollars 是元

cents 是分

tenths 是1/10的意思，因为你问题中有一个 .693，所以要说69又3/10分

USD187465.05

one hundred eighty-seven thousand four hundred sixty-five dollars and five cents

USD2503249.693

two million five hundred and three thousand two hundred forty-nine dollars and sixty-nine and three-tenths cents

USD804920.4

eight hundred and four thousand nine hundred twenty dollars and forty cents