Provide some comments on what can this cost of debt results tell you and what factors can lead to this happen? Is this approximation method reasonable? Imagine this cost of debt data is belong to the US company - Facebook

(100 to 200 words)

2012 2013 2014 2015 2016 2017 2018 2019 Financial Expenses -51 -56 -23 -23 -10 -6 -9 -20 Tortal debt 2,356 476 233 315 0 0 0 473 Cost of debt = financial expense (positive)/ total debt Cost of debt 0.02164686 0.11764706 0.09871245 0.07301587 0 0 0 0.0422833 2012 2013 2014 2015 2016 2017 2018 2019 Financial Expenses -51 -56 -23 -23 -10 -6 -9 -20 Tortal debt 2,356 476 233 315 0 0 0 473 Cost of debt = financial expense (positive)/ total debt Cost of debt 0.02164686 0.11764706 0.09871245 0.07301587 0 0 0 0.0422833