Table:
|  | Year ended December 31, |  | Variance |  |
| --- | --- | --- | --- | --- |
|  | 2019 | 2018 | $ | % |
| Software Solutions | $412.7 | $394.8 | $17.9 | 5% |
| Data and Analytics | 123.4 | 115.0 | 8.4 | 7% |
| Corporate and Other | 109.9 | 115.6 | (5.7) | (5)% |
| Total | $646.0 | $625.4 | $20.6 | 3% |
Paragraphs:
Consolidated Financial Results
Operating Expenses
The following table sets forth operating expenses by segment for the periods presented (in millions):
The increase in Operating Expenses was primarily driven by higher net personnel costs, technology-related costs and acquisition-related costs in our Software Solutions segment. The increase in our Data and Analytics segment primarily related to higher net personnel costs and higher data costs related to revenue growth. The decrease in Corporate and Other was primarily driven by lower incentive bonus expense.
Question:
What was the average  operating expenses between 2018 and 2019?
Answer: (646.0+625.4)/2 = 635.7