Given the following cash flows for projects A and B$.$

A:$($$$9000,$ $$400,$ $$700,$ $$800,$ $$800),$

B:$($$$6000,$ $$400,$ $$-900,$ $$700,$ $$1000).$

If the required rate of return for the project is $7\mathrm{.}8\%.$ The NPV of the project B is $$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.$