Table:
| Fiscal 2019 | First Quarter | Second Quarter | Third Quarter | Fourth Quarter | Total |
| --- | --- | --- | --- | --- | --- |
| Net sales | $1,212.5 | $1,432.5 | $1,374.7 | $1,329.8 | $5,349.5 |
| Gross profit | $642.0 | $689.3 | $779.6 | $820.5 | $2,931.3 |
| Operating income | $132.3 | $102.7 | $194.7 | $284.6 | $714.3 |
| Net income from continuing operations | $35.7 | $96.3 | $49.2 | $174.7 | $355.9 |
| Diluted net income per common share | $0.14 | $0.38 | $0.20 | $0.70 | $1.42 |
Paragraphs:
Note 21. Quarterly Results (Unaudited)
The following table presents the Company's selected unaudited quarterly operating results for the eight quarters ended March 31, 2019. The Company believes that all adjustments of a normal recurring nature have been made to present fairly the related quarterly results (in millions, except per share amounts). Amounts may not add to the total due to rounding:
Refer to Note 11, Income Taxes, for an explanation of the one-time transition tax recognized in the third quarter of fiscal 2018. Refer to Note 4, Special Charges and Other, Net, for an explanation of the special charges included in operating income in fiscal 2019 and fiscal 2018. Refer to Note 12, Debt and Credit Facility, for an explanation of the loss on settlement of debt included in other (loss) income, net of $4.1 million during the second quarter, $0.2 million during the third quarter, and $8.3 million during the fourth quarter of fiscal 2019 and $13.8 million and $2.1 million for the first quarter and third quarter of fiscal 2018, respectively. Refer to Note 5, Investments, for an explanation of the impairment recognized on available-for-sale securities in the fourth quarter of fiscal 2018.
Question:
Why might amounts may not add to the total?
Answer: due to rounding