Convert from seer [Pakistan] to petagram

Unit Definition (seer [Pakistan])
The seer [Pakistan] is a traditional weight unit in India and South Asia. In Pakistan, the seer is now considered equal to the kilogram. The unit is sometimes spelled ser.

Unit Definition (petagram)
The petagram is a metric unit of mass equal to 10E15 grams or 1 gigatonne (one billion metric tons). This unit is used in atmospheric science and other scientific contexts where large masses are considered.