Update system logic documentation for multiplication factor change

[Copilot]

The system_logic.py multiplication factor was changed from 2 to 10. Documentation was out of sync.

Changes

• Updated test-system-logic.md to reflect multiplication factor of 10
• Corrected example calculation: [1, 2, 3] now outputs 60 (was 12)

- It multiplies the remaining numbers by **2**.
+ It multiplies the remaining numbers by **10**.

- Output: `12` (because 1*2 + 2*2 + 3*2 = 12)
+ Output: `60` (because 1*10 + 2*10 + 3*10 = 60)

Original prompt

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This section details on the original issue you should resolve

<issue_title>Docs Update: System Logic Changed</issue_title>
<issue_description>The system logic in system_logic.py has been updated.

Commit Message:
Change multiplication factor from 2 to 10

Task for Agent:

1. Read the code changes in the commit.
2. Find the documentation page 'System Logic Test' (docs/test-system-logic.md).
3. Update the description of the math logic to match the new code.
   </issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Docs Update: System Logic Changed #3

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