The beginning balance of Zerina's savings account for the month of July was $1800, and itremained this way for the first 12 days of the month. On July 13, Zerina made a withdrawal of $400, so her balance changed, and it remained the same for a total of 8 days. On July 21, Zerina made a deposit of $1200, so her balance changed again, and it remained the same for a total of 11 days to finish out the month. If Zerina's savings account has an APR of 7.3%, calculates interest daily, and pays interest at the end of the month, how much did Zerina earn in interest in the
month of July?