The national debit of a small country is $$7,850,000,000$ and the population is $2,135,000.$ What is the amount of debt per person?

A$.$ $$3\mathrm{.}68\backslash$times $103$rd

B$.$ $$3\mathrm{.}68$ x $106$th

C$.$ $$36\mathrm{.}80$

D$.$ $$3\mathrm{.}68$