human
2 balls weighing 10e8 kg each are 2 meters apart. Calculate the gravitational attractive force between them. Explain your calculation step by step with details. Answer in unit Newton.
gpt
--- Reasoning ---
1. Is the question multiple-choice question?
No
2. Is it implied multiple-choice question?
No
3. If two experts were independently asked the question, will the final answer be exactly the same?
Yes

--- Answer ---
grounded