DSCR

you can use operating profits before deducting the interest cost to calculate DSCR.

and i think ur days of recovery are 89 days.

lets wait for some other suggestions

I also think that we can use operating profit before interest,depreciation and other non cash items but after tax should be taken

If ratio is less than one then it indicates the long term solvancy problem

Agreeing with Ashish Gupta

Assuming that given sale is on credit and average debtors are 2137246694

2137246694  X 365 / 8763033905  =  89 days