Do you mean 1.8% per annum (year) compounded monthly. This would be 1.8% / 12=0.15% per month compounded monthly.
OR
do you mean 1.8% per month compounded monthly? This would be 1.8%*12 =21.6% per year compounded monthly?
I will assume you mean the first one.
1.8% per annum (year) compounded monthly. This would be 1.8% / 12 = 0.15% per month compounded monthly.
n=8*12=96 months
A=$3000
i = 0.15% = 0.0015
Future value = A*(1+i) n
Future value = 3000*(1+0.0015) 96
Future value = $3364.28
+118654 
