We might as well just use the total data to figure out the expected frequency of getting sick and not getting sick. So 80 divided by 380 did not get sick, and that's 21%. So let me write that over here. So that's 21% of the total. And then this would be 79% if we just subtract 1 minus 21. We could divide 300 by 380. We should get 79% as well.