The principal that amounts to Rs

The principal that amounts to Rs. 3913 in 3 years at 6 1/4 % per annum C.I. compounded annually, is?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #7445