156119

7x4=28 4 Zepts

3x8=24 8 Zios

I got this answer by trying to go up systematically in the 7 times table.First of I tried finding out how many Zios there were.Firstly,I took away 14 away from 52 because of the description in the clue.The answer to this sum was 38.From the answer of 38 I tried dividing 38 from 3.But there was no full answer.Next I tried 21,52-21=31.So once again my answer was not in the 3 times table.The next number in the 7 times table was 28.So once again took took my answer 28 away from 52.52-28=24.I then found out 8x3=24.So that was the answer to how many Zios there were and because 28 is the answer to 7x4 that told me the answer to how many Zepts there were.