is($o->marge_percent_as_percent('40'), '40');
is($o->marge_percent, 0.40);
is($o->marge_percent_as_percent, '40');
-is($o->marge_percent_as_percent('22,4'), '22');
+is($o->marge_percent_as_percent('22,4'), '22,40');
is($o->marge_percent, 0.224);
is($o->marge_percent_as_percent, '22');
is($o->marge_percent(0.231), 0.231);