A deposit of $7,000 at 6.5% for 120 days. 151.67 358.97

120 days is approximately equals to 4 months. (30 days * 4 = 120 days)

Now you deposited 7000 dollars at 6.5% interests.

IN 1 months

=> 7000 *.065 = 455 dollars in 1 month is the interest

=> 455 * 4 months = 1820 dollars n 4 months

=> 7000 + 1820 = 8820 dollars.