What was the difference between the total revenue from Network Solutions and Services & Support?
{"Access & Aggregation": {"Network Solutions": 301801, "Services & Support": 57069, "Total": 358870}, "Subscriber Solutions & Experience (1)": {"Network Solutions": 129067, "Services & Support": 5393, "Total": 134460}, "Traditional & Other Products": {"Network Solutions": 27364, "Services & Support": 8583, "Total": 35947}, "Total": {"Network Solutions": 458232, "Services & Support": 71045, "Total": 529277}}
total_network = df["Total"]["Network Solutions"]
total_support = df["Total"]["Services & Support"]
answer = total_network - total_support