A lot of people have difficulty recalling numbers. That is not difficult to understand, since all of US recall things that we care about, & most people don’t care greatly about amounts. The key to amounts that are remembering would be to change them into something that we do care about employing mnemonics. There is a mnemonic a system, such as a best-essay-s.com rhyme or a jingle, used-to aid memory. Music students remember "Every Great Kid Does Fine" to remember the notes "EGBDF" from base to top inside the treble cleff.