Find the amount which Ram will get on Rs 4096, if he gave it for 18 months at 12.5%

Given P=Rs.4096
T=18 months
r=12.5%
A=p(1+r/200)^2n × (1+br/100)
=4096(1+12.5/200)^(2×1) × (1+(12×12.5)/100)
=4096(1+12.5/200)^2 × (1+150/100)
=4096(1+0.0625)^2 × (1+1.5)
=4096(1.0625)^2 × (2.5)
=4096(1.12890625) × 2.5
=4622.578125 × 2.5
=11556.4453125
Amount ≈ Rs 11556.45