UOM KG TO NOS Items per unit decimal 6 digits Issue in inventory Qty

Our Customer person request of Purchasing Items successful KGs and Inventory volition beryllium Nos and they privation to contented to accumulation arsenic Nos.We are utilizing UOM Group explanation to execute this 1Nos=54 Kgs truthful Item per portion is taking successful strategy automatically as 0.018519 6 digits but our Qty decimal is 5 digits 

But the strategy is taking the conversion successful nos arsenic 3.92603 decimal for beneath script we tried to alteration decimal of qty to 6 digits but it remains same

We privation to circular disconnected this to 4 Nos since we cant usage successful decimal worth to production.

Please supply solution for the supra script and counsel america however to grip this successful SAP B1