What is an unambiguous expression for 3 3 3 3 3? [closed]

In some country there is a unit for countable quantity.

3 3 3 3 3

For example, they say "5 count-unit of 3".

But in English we just say "five threes". But then

3 3 3 3 3

and

5 3

are hard to distinguish.

I believe I heard someone saying '5 lots of 3', but I am not sure the expression is correct or suitable for 3 3 3 3 3.

Q1) what is unambiguous English expression for 3 3 3 3 3 ? Q2) Is '5 lots of 3' acceptable expression for 3 3 3 3 3 ?

In British English, those numbers would sometimes be expressed as "quintuple three", although expressions like "double three" and "triple three" would be more common since quintuples don't come up very often.

This construction is much less common in American English, however, which doesn't really have an exact equivalent to it that avoids the ambiguity you describe that could come up, for example, giving someone a phone number on a bad cell phone connection where the difference between "Five three" and "five threes" could be hard to hear.