Terms of a $7,000$ loan are as follows:

An alternative is offered:

Monthly payments calculated as above.

First payment not due until the end of the fifth month.

An extra payment made at the end of the $60$th month for the balance of the loan

Determine the amount of the extra payment in the alternative payment scheme

$799\mathrm{.}42$

$804\mathrm{.}75$

$826\mathrm{.}42$

$831\mathrm{.}93$

$83748$