Vyxal r, 9 bytes

3ɾ›ƛ⁰/⌈n*

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 ɾ        # Range 1...
3         # Literal
  ›       # Incremented (2...4)
   ƛ      # Map to...
        * # Product of...
       n  # Current item
        * # And...
      ⌈   # Floor of
          # (Implicit) current item
     /    # Divided by...
    ⁰     # Input