36:33 Hi Linda, this is Wayne. I would like to pick you question. As I mentioned, the key dynamic [indiscernible] 2021 and we already respectively disclosed our financial figures in our earnings for the remaining business. They continue operation business. Compared with 2020, the annual growth rate of the revenue from the continuing operations to close to 50%. 37:07 Overall gross profit margin for continuing operations is around 50%. Going forward, we will concentrate more on the segment our smart devices, education, digitalization solutions, and the STEAM and adult. 37:27 Although we will not provide specific guidance on the revenue rates and the profit margin for 2022 or 2023, however I would like to add some color going forward for this business respectively. 37:48 First, for smart devices, we are good and already have a strong business, including, but not limited to branding, technology, and channel advantages when compared with those peers for our new [indiscernible]. And we are committed to invest more [indiscernible] in a new category or new pipeline. 38:14 As mentioned by Dr. Zhou, new pipelines are expected to be launched in the near future. We believe we have maintained a great year-over-year growth rate of our revenue. Although, our revenue business is already a bit high. We also spent a better profit margin, which is mainly contributed from the achievement of economic scale. 38:45 Second, for STEAM business, say educational digitalization solutions. We had got certain milestone in 2021 for example, [indiscernible] partnerships with [indiscernible] to provide school and teachers with our Youdao math learning terminal and solutions, which empowers them to efficiently track students learning progress and optimize teaching deadlines. 39:21 Further, the business skills were expected to enlarge. We believe we will achieve over 100% growth relatively low business in 2021. Lastly, we also plan to invest more R&D and the marketing expenses to update the product version. Therefore, a great growth rate, as well as more losses expected to invest in this segment. 39:53 Finally, both STEAM and adult business as explained by my [indiscernible] these segments are supported by the base and we will strictly follow the regulators guidance. In addition, we have multiple products in STEAM such as [indiscernible], which increased quickly. On the high hand, we expect to launch model competitive SKUs to achieve faster growth. 40:30 Considering the increase in user demand and the large economic skills, better profit margin are expected to achieve for this segment. But we are very confident in [insurance] [ph], in revenue and improved profit margin for the remaining business going forward. Wish this is helpful. Thank you.