v(10)=18500(.78*.78*.78*.78*.78*.78*.78*.78*.78*.78)

Solution for v(10)=18500(.78*.78*.78*.78*.78*.78*.78*.78*.78*.78) equation:

v(10)=18500(.78*.78*.78*.78*.78*.78*.78*.78*.78*.78)

We simplify the equation to the form, which is simple to understand 
v(10)=18500(.78*.78*.78*.78*.78*.78*.78*.78*.78*.78)

Reorder the terms in parentheses
+(+10v)=18500(.78*0.10686892091328)

Remove unnecessary parentheses
+10v=+18500+(.78+*0.10686892091328+)

We move all terms containing v to the left and all other terms to the right. 
+10v=+18500 + 0.10686892091328

We simplify left and right side of the equation. 
+10v=+18500.106868921

We divide both sides of the equation by 10 to get v. 
v=1850.0106868921