convert to the unit in the brackets

(1) 6 438m in (kg)

(2) 8,187km in (m)

(3) 6,75m in (cm)

(4) 77cm in (m)

(5) 0,345km in (m)

(6) 127cm² in (mm)²

(7) 144m² in (km)²

(8) 123m³ in (mm)³

(9) 12 430 000cm³ in (m)³