How was the weight of the sun calculated?

Question: How was the weight of the sun calculated?
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  experiment,
  how science works,
  research
Asked by to Nick on 16 Mar 2014. This question was also asked by .
- Nick Wright answered on 16 Mar 2014:
  
  The weight of the Sun was first calculated by Isaac Newton by measuring the pull of the Sun on the planets in our Solar System. Because gravity from the Sun pulls on all the planets in our Solar System we can use their motions to calculate the mass of the Sun.

Question: How was the weight of the sun calculated?