SectorsToBytes/KB/MB/GB conversion

select 209715200 sectors,  209715200* 512 sectorsTObytes,
(209715200* 512)/1024 sectorsTOKilobytes,
(209715200* 512)/(1024*1024) sectorsTOMegabytes,
(209715200* 512)/(1024*1024*1024) sectorsTOGigabytes
from dual;

 SECTORS SECTORSTOBYTES SECTORSTOKILOBYTES SECTORSTOMEGABYTES SECTORSTOGIGABYTES
---------- -------------- ------------------ ------------------ ------------------
 209715200     1.0737E+11          104857600             102400                100