2(km) x 0,0001(Mm) x 5 x 0,0001(dm) : 2 x 10000(mm) x 1000000(um)=
2(km) x 5 x 10⁻⁴(Mm) x 10⁴(dm):2 x 10⁴(mm) x10⁶(um) =
= 10¹(km) x10⁻⁴(Mm) x 10⁴(dm):2 x 10¹⁰ =
=10⁻³ x 10¹⁰ x 10⁴(dm):2 =
= 10⁻⁷ x 10⁴(dm):2 =
= 10⁻⁷ x ½ x 10⁴ =
= ½ x 10⁻⁷ x 10⁴ =
= ½ x 10⁻³