⇣ irrrub ⇣irr100rub00021irr500rub00107irr1000rub00214irr2000rub00428irr5000rub01071irr10000rub02141⇣ irrrub ⇣irr1,00000rub214irr5,00000rub1071irr10,00000rub2141irr25,00000rub5353irr50,00000rub10706irr100,00000rub21413