Those little boxed numbers are shown because you don't have the software to display Chinese characters - computers that do have the software show the characters properly.
As already said , online translators are rubbish. They literally translate into the simplest meaning of the word without taking grammar into account.
For example, babelfish translates 'He worked with dogged determination' into
他与顽固决断一起使用
It translates it back to
He uses together with the stubborn resolution