O solutie este folosirea CEILING:

DECLARE @X DECIMAL(10,2)=835
DECLARE @Y DECIMAL(10,2)=30
DECLARE @Z DECIMAL(10,2)=15
SELECT CEILING(@X / @Y * @Z)

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Cristian Andrei Lefter, SQL Server MVP
MCT, MCSA, MCDBA, MCAD, MCSD .NET,
MCTS, MCITP - Database Administrator SQL Server 2005
http://sqlserver.ro