⇣ irrrub ⇣irr100rub00022irr500rub00108irr1000rub00215irr2000rub00431irr5000rub01077irr10000rub02154⇣ irrrub ⇣irr1,00000rub215irr5,00000rub1077irr10,00000rub2154irr25,00000rub5384irr50,00000rub10769irr100,00000rub21538