Actually pass floats when formatting '%f'.

Some of these were pointed out by Anonymous on SourceForge bug #2830659.

gitstats

@@ -675,7 +675,7 @@ class HTMLReportCreator(ReportCreator):
 			authors.reverse()
 			commits = data.author_of_month[yymm][authors[0]]
 			next = ', '.join(authors[1:5])
-			f.write('<tr><td>%s</td><td>%s</td><td>%d (%.2f%% of %d)</td><td>%s</td></tr>' % (yymm, authors[0], commits, (100 * commits) / data.commits_by_month[yymm], data.commits_by_month[yymm], next))
+			f.write('<tr><td>%s</td><td>%s</td><td>%d (%.2f%% of %d)</td><td>%s</td></tr>' % (yymm, authors[0], commits, (100.0 * commits) / data.commits_by_month[yymm], data.commits_by_month[yymm], next))
 
 		f.write('</table>')
 
@@ -687,7 +687,7 @@ class HTMLReportCreator(ReportCreator):
 			authors.reverse()
 			commits = data.author_of_year[yy][authors[0]]
 			next = ', '.join(authors[1:5])
-			f.write('<tr><td>%s</td><td>%s</td><td>%d (%.2f%% of %d)</td><td>%s</td></tr>' % (yy, authors[0], commits, (100 * commits) / data.commits_by_year[yy], data.commits_by_year[yy], next))
+			f.write('<tr><td>%s</td><td>%s</td><td>%d (%.2f%% of %d)</td><td>%s</td></tr>' % (yy, authors[0], commits, (100.0 * commits) / data.commits_by_year[yy], data.commits_by_year[yy], next))
 		f.write('</table>')
 
 		f.write('</body></html>')
@@ -762,7 +762,7 @@ class HTMLReportCreator(ReportCreator):
 		f.write('<dl>')
 		f.write('<dt>Total tags</dt><dd>%d</dd>' % len(data.tags))
 		if len(data.tags) > 0:
-			f.write('<dt>Average commits per tag</dt><dd>%.2f</dd>' % (data.getTotalCommits() / len(data.tags)))
+			f.write('<dt>Average commits per tag</dt><dd>%.2f</dd>' % (1.0 * data.getTotalCommits() / len(data.tags)))
 		f.write('</dl>')
 
 		f.write('<table>')