Response to the following problem:
A property-casualty insurer brings in $6.25 million in premiums on its homeowners MP line of insurance. The line's losses amount to $4,343,750, expenses are $1,593,750, and dividends are $156,250. The insurer earns $218,750 in the investment of its premiums.
Calculate the line's loss ratio, expense ratio, dividend ratio, combined ratio, investment ratio, operating ratio, and overall profitability.