Hi Emly,
can you check this one and see if it works?
SELECT CEILING($[RDR1.Quantity.number]/4.4)*4.4 as 'New Ordered Qty (metres)'
FROM RDR1 T0 INNER JOIN ORDR T1 ON T0.[DocEntry] = T1.[DocEntry]
WHERE T0.[ItemCode] = '1412534' and T0.Linenum = $[RDR1.Linenum] and T1.Docnum = $[ORDR.DocNum]
Thanks,
Joseph