Hi Maysa,
You can do it via using the operation in your PRC in Payroll schema: ROUND - Rounding Off Within Current Wage Type. You can read more SAP document to explain how Round operation works via T-code PDSY.
Anw 185.667 will be round 185.67 by the SAP standard already. I mean w/o using addition operation in pcr e..g ROUND, SAP will automatically round to 185.67 if you setup the decimal as 2 digits only.
You can define you decimal via SPRO:
Personnel Administration
Payroll Data
Basic Pay
Define hourly rates with several decimal places
Decimal places for currencies
Best Regards,
Woody (Trong Minh)