How many suppliers from Germany have left a comment with 'carefully regular packages'?
Germany is nation name which refers to n_name = 'GERMANY'; comment with 'carefully regular packages' refers to s_comment LIKE 'carefully regular packages%'
SELECT COUNT(T1.s_suppkey) FROM supplier AS T1 INNER JOIN nation AS T2 ON T1.s_nationkey = T2.n_nationkey WHERE T2.n_name = 'GERMANY' AND T1.s_comment LIKE '%carefully regular packages%'