Terms for subject Proverb containing ясно как дважды два

Russian	English
ясно как дважды два – четыре	as plain as two and two make four
ясно как дважды два – четыре	it's as plain as a pikestaff
ясно, как дважды два – четыре	as plain as two and two make four
ясно как дважды два – четыре	clear as that two and two make four
ясно, как дважды два-четыре	as plain as two and two make four