What percentage of total contractual obligations were due less than a year?
{"Long-term debt(1)": {"Total": 1581.8, "Less than 1 year": 51.7, "1-3 years": 1461.0, "3-5 years": 69.1, "More than 5 years": "$\u2014"}, "Operating Lease Obligations (Time Charters) for vessels in operation(2)(4)": {"Total": 367.4, "Less than 1 year": 109.6, "1-3 years": 142.7, "3-5 years": 81.6, "More than 5 years": 33.5}, "Operating Lease Obligations (Time Charters) for vessels to be delivered(4)": {"Total": 63.4, "Less than 1 year": 5.5, "1-3 years": 13.6, "3-5 years": 12.9, "More than 5 years": 31.4}, "Acquisition of six liquid barges (5)": {"Total": 12.4, "Less than 1 year": 0.5, "1-3 years": 4.4, "3-5 years": 5.3, "More than 5 years": 2.2}, "Rent Obligations(3)": {"Total": 1.3, "Less than 1 year": 0.8, "1-3 years": 0.4, "3-5 years": 0.1, "More than 5 years": "\u2014"}, "Land lease agreements (3)": {"Total": 25.8, "Less than 1 year": 0.6, "1-3 years": 1.1, "3-5 years": 1.1, "More than 5 years": 23.0}, "Total": {"Total": 2052.1, "Less than 1 year": 168.7, "1-3 years": 1623.2, "3-5 years": 170.1, "More than 5 years": 90.1}}
total_less_than_1_year = df["Total"]["Less than 1 year"]
total_total = df["Total"]["Total"]
answer = total_less_than_1_year / total_total * 100.0