3000000.......100%
36000. ..........?%
?%=36000 ×100:3000000
?%=3600000:3000000
?%=1,2%
Rata dobânzii anuale=1,2%
100%.........7500000
1,2%.............x lei
x=1,2×7500000:100
x=9000000:100
x=900000
Valoarea dobânzii anuale la o sumă depusă de 9000000=900000