(70/(1,03)+2*70/(1,03)^2+3*70/(1,03)^3+4*70/(1,03)^4+5*70/(1,03)^5+6*70/(1,03)^6+7*70/(1,03)^7+8*70/(1,03)^8+9*70/(1,03)^9+10*1070/(1,03)^10)/815,66
Mathbot Says...
I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.