I've got a SQL command that looks like it's working, but I noticed all the of "NumRo" values are multiples of 3. I just know this can't be right. What is it actually doing?

SELECT v_tmpart.Insurance,;
v_tmpart.range,;
SUM(v_tmpart.subtotal) AS TotalValue,;
COUNT(v_tmpart.ro) AS NumRo,;
SUM(v_tmpart.numdays) AS TotalDays,;
SUM(v_tmpart.numdays) / COUNT(v_tmpart.ro) AS AvgTime;
FROM v_tmpart;
WHERE v_tmpart.datein >= ?THIS.dFromDate AND v_tmpart.datein <= ?THIS.dToDate;
GROUP BY v_tmpart.insurance,v_tmpart.range;
INTO CURSOR ArtReport