Determine the interest on the following notes. (Round to the nearest cent.)
a. $38,760 at 10 percent for 90 days.
b. $27,200 at 12 percent for 60 days.
c. $30,600 at 9 percent for 30 days.
d. $51,000 at 15 percent for 120 days.
e. $18,360 at 6 percent for 60 days.