Complex sentence: The pair moved into small 400 sq. ft. apartment in Chennai spent Rs.80,000 to renovate it as a penthouse studio apartment in 12 days, while setting up an office in the basement of the same building.
Split into simpler sentences: The pair moved into a small 400 square-foot apartment in Chennai, and spent ₹80,000 to renovate it as a penthouse studio. He set up an office in the basement of the same building.