DB ORACLE - PLSQL call procedure

How to call procedure in PLSQL of Oracle DB.

Note: procedure name, the "()" is not requried

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Declare
Lcntr number;
LCalc number;
LCalcTmp Number;
Begin
FOR Lcntr IN 1..36
LOOP
     myprocedure;  -- procedure name, the "()" is not requried
     for LCalc in 1..100000000 -- sleep sometime
     LOOP
     LCalcTmp := LCalcTmp+1;
     END LOOP;
END LOOP;
end;