Slang/Alternate Way of Saying Numbers?
So I've seen from one piece that ゴム (Gomu) can mean 56, which I assume takes from 五(go) from five & the prefix of 六つ (mu) for six. Does this work for other combinations of numbers as well? I was looking to get a custom licence plate for my GR86 and am limited to only six characters so I thought something like "Yaroku" would work taking from 六 (roku) for six and the prefix of 八つ (yattsu). I know I'm essentially doing the same thing as gomu, but was wondering if its something that would be recognisable as being "86" or if it would just be jibberish if someone japanese did happen to read it. Thanks in advance.