Interest for bond $($held$-$to$-$maturity$)$ investments

On February $1,$ Hansen Company purchased $$72,000$ of $5\%,10-$year Knight Company bonds at their face amount plus $1$ month$$s accrued interest. The bonds pay interest on January $1$ and July $1.$ On October $1,$ Hansen Company sold $$26,400$ of the Knight Company bonds acquired on February $1,$ plus $3$ months$$ accrued interest. On December $31,3$ months$$ interest was accrued for the remaining bonds.

Determine the interest earned by Hansen Company on Knight Company bonds for the year.

$fill in the blank $1$