How to round to upper (large) number in SQL Server

Since you are dividing integer the result is integer without any decimals and hence you will need to convert number to numeric and then divide which gives output 4.88

DECLARE @Num1 NUMERIC(10, 2), @Num2 NUMERIC(10, 2)
SET @Num1 = 83
SET @Num2 = 17
SELECT @Num1/@Num2

And now if you need Round figure 5 then use CEILING method to get output 5

DECLARE @Num1 NUMERIC(10, 2), @Num2 NUMERIC(10, 2)
SET @Num1 = 83
SET @Num2 = 17
SELECT CEILING(@Num1/@Num2)