SQL Syntax

This query
SELECT j.JOB_ID, s.SCTYPE, SUM(c.POPU)/(SUM(c.POPU)/SUM(c.POPU/c.POUEST)) AS EstHours
FROM ccode c
INNER JOIN sccode s ON s.SCCODE_ID = c.SCCODE_ID
INNER JOIN job j ON c.JOB_ID = j.JOB_ID
WHERE j.JOB_ID = 7398
AND s.SCTYPE IN (1,2,3,4,5,6,7)
AND c.POPU > 0
AND (j.DELETED != 'Y'OR j.DELETED IS NULL)
AND (c.DELETED != 'Y'OR c.DELETED IS NULL)
AND (s.DELETED != 'Y'OR s.DELETED IS NULL)
GROUP BY j.JOB_ID, s.SCTYPE;

returns
JOB_ID   SCTYPE   EstHours
7398          1           3280.53
7398          3           1893.76
 
This query
SELECT a.POEST
FROM (SELECT MAX(c.POPU) POPU, c.POEST
FROM ccode c
JOIN sccode s ON s.SCCODE_ID = c.SCCODE_ID
JOIN job j ON j.JOB_ID = c.JOB_ID
WHERE j.JOB_ID = 7398
AND s.SCTYPE IN (1,2,3,4,5,6,7)
AND c.POPU > 0
GROUP BY j.JOB_ID, s.SCTYPE)a;

returns
POEST
24.64
25.09

I would like to join/rewite this to ouput (Total = EstHours * POEST)
JOB_ID   SCTYPE   EstHours    POEST         TOTAL
7398          1           3280.53          24.64           80832.26
7398          3           1893.76          25.09           47514.44
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